Impurities
We provide certified impurity reference standards to support pharmaceutical research, development, and quality control activities.
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- Reference and working impurity standards
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Our impurity standards enable accurate identification, quantification, and regulatory submission support.
Impurities Products List
| S.No | API Name and their Impurity Name | CAS No. |
|---|---|---|
| ABACAVIR | ||
| 1 | Abacavir Cyclodiaminopurine | 120503-69-7 |
| 2 | Abacavir Impurity A | |
| 3 | Abacavir Related compound C | 172015-79-1 |
| ACECLOFENAC | ||
| 4 | Aceclofenac EP Impurity B | 15307-78-5 |
| ACECLOFENAC | ||
| 5 | Aceclofenac EP Impurity C | 15307-77-4 |
| ACECLOFENAC | ||
| 6 | Aceclofenac EP Impurity I | 15362-40-0 |
| ALBEBDAZOLE | ||
| 7 | Albendazole EP Impurity H | 20367-38-8 |
| ALLOUPURINOL | ||
| 8 | Allopurinol Related Compound E | 31055-19-3 |
| AMBRISENTEN | ||
| 9 | Ambrisentan N-Oxide | NA |
| AMLODIPINE | ||
| 10 | Amlodipine EP impurity A | 88150-62-3 |
| 11 | Amlodipine EP impurity B | 721958-72-1 |
| 12 | Amlodipine EP Impurity D | 113994-41-5 |
| 13 | Amlodipine EP Impurity E | 140171-65-9 |
| 14 | Amlodipine EP Impurity F | 140171-66-0 |
| 15 | Amlodipine Impurity A Fumarate salt | |
| 16 | Amlodipine Impurity G | 43067-01-2 |
| ARIPIPRAZOLE | ||
| 17 | Bis (2,3-Dichlorophenyl) piperazine | 1424857-89-5 |
| 18 | Di-[2-(2,3-dichlorophenyl)aminoethyl]amine | NA |
| 19 | N1-(2-Chloroethyl)-N2-(2,3-dichlorophenyl)ethane-1,2-diamine | NA |
| ATAZANAVIR | ||
| 20 | (2R,3S)-3-(tert-Boc)amino-1,2-epoxy-4-phenylbutane | 98760-08-8 |
| 21 | (2S ,3S )-3-Amino-4-phenyl-1-{1-[4-(pyridin-2- | NA |
| 22 | (2S,3S)-3-Boc-amino-1,2-epoxy-4-phenylbutane | 98737-29-2 |
| 23 | (3R,8R,9S,12R)-Atazanavir | 1292296-10-6 |
| 24 | (3R,8R,9S,12S) Atazanavir | NA |
| 25 | (3R,8S,9S,12R)-Atazanavir | 1292296-11-7 |
| 26 | (3R,8S,9S,12S)-Atazanavir | 1332981-14-2 |
| 27 | (3S,8R,9S,12R) Atazanavir | NA |
| 28 | (3S,8S,9S,12R)-Atazanavir | 1332981-16-4 |
| 29 | 1-Boc-2-[4-(2-pyridinyl)benzylidene]hydrazine | 198904-85-7 |
| 30 | 4-(2-Pyridinyl)benzaldehyde | 127406-56-8 |
| 31 | 4-(2-Pyridinyl)benzoic Acid | 4385-62-0 |
| 32 | 8-epi Atazanavir | 1292296-09-3 |
| 33 | Atazanavir Di-tert-butyl Analog from RS epoxide | NA |
| 34 | Atazanavir Di-tert-butyl Analog from SS epoxide | NA |
| 35 | Atazanavir R,R,S | NA |
| 36 | Atazanavir R,S,S | NA |
| 37 | Atazanavir S,S,S | NA |
| 38 | Atazanavir Trihydrochloride | 198904-87-9 |
| 39 | Des-N-(methoxycarbonyl)-L-tert-leucine | NA |
| 40 | N-(Methoxycarbonyl)-L-tert-leucine | 162537-11-3 |
| ATOMOXETINE | ||
| 41 | Atomoxetine S isomer | NA |
| ATORVASTATIN | ||
| 42 | 2,2-dichloro-1-(4-fluorophenyl)-2-phenylethanone | NA |
| AXITINIB | ||
| 43 | Axitinib Dimer | 1428728-84-0 |
| AZITHROMYCIN | ||
| 44 | Azithromycin Imp-A | 76801-85-9 |
| 45 | Azithromycin Imp-C | NA |
| 46 | Azithromycin Imp-G | NA |
| 47 | Azithromycin Impurity J | NA |
| 48 | Azithromycin N-Oxide | NA |
| BACLOFEN | ||
| 49 | 4-(4-Chlorophenyl)-2,6-piperidinedione | 84803-46-3 |
| 50 | Baclofen Impurity 1 | 35271-74-0 |
| 51 | Chlorophenylglutaric acid anhydride | 53911-68-5 |
| BENDAMUSTINE | ||
| 52 | Deschloroethyl Bendamustine Hydrochloride | 1797881-48-1 |
| BENZOTHIADIAZINE | ||
| 53 | Benzothiadiazine Related Compound A | 121-30-2 |
| BETAHISTINE | ||
| 54 | Betahistine EP Impurity A | 100-69-6 |
| 55 | Betahistine EP Impurity B | 103-74-2 |
| 56 | Betahistine EP Impurity C | 2095467-43-7 |
| BICLUTAMIDE | ||
| 57 | 4-Amino-2-trifluoro methyl benzonitrile | 654-70-6 |
| 58 | Bicalutamide Impurity J | 90356-78-8 |
| 59 | Bicalutamide Impurity Mixture K and L | NA |
| 60 | Bicalutamide Related Compound B | 1166228-30-3 |
| BISOPROLOL | ||
| 61 | Bisoprolol EP Impurity A | 62572-93-4 |
| 62 | Bisoprolol EP Impurity G | 1215342-36-1 |
| 63 | Bisoprolol EP Impurity K | 1217245-60-7 |
| 64 | Bisoprolol EP Impurity L | 29122-74-5 |
| 65 | Bisoprolol EP Impurity M | 177034-57-0 |
| 66 | Bisoprolol Impurity 1 | 1346603-05-1 |
| 67 | N-Formyl Bisoprolol | 1447715-45-8 |
| BUDESONIDE | ||
| 68 | 21 dehydro Budesonide | 85234-63-5 |
| BUPIVACAINE | ||
| 69 | 1-(2,4-Dihydroxyphenyl)hexan-1-one | 3144-54-5 |
| 70 | 1-(2,4-dihydroxyphenyl)pentan-1-one | 15116-13-9 |
| 71 | 1-(2,6-Dimethylphenyl)azepan-2-one (Cyclised Impurity) | NA |
| 72 | 4-Hexylbenzene-1,3-diol | 136-77-6 |
| 73 | 4-Pentylbenzene-1,3-diol | 533-24-4 |
| 74 | Bupivacaine Impurity A | 39627-98-0 |
| 75 | Bupivacaine Impurity E | 1330172-81-0 |
| CELECOXIB | ||
| 76 | Celecoxib D7 | 544686-21-7 |
| 77 | Celecoxib Impurity 2 | 948293-46-7 |
| 78 | Celecoxib Impurity 7 (2,4 Dimethyl celecoxib) | 170570-09-9 |
| 79 | Celecoxib Impurity A | 170570-01-1 |
| 80 | Celecoxib Impurity B | 331943-04-5 |
| 81 | Celecoxib Impurity C (2-methyl Celecoxib) | 170569-99-0 |
| 82 | Celecoxib Methyl P-toluate | 99-75-2 |
| CETIRIZINE | ||
| 83 | Cetirizine EP Impurity A | 303-26-4 |
| 84 | Cetirizine EP Impurity D | 346451-15-8 |
| 85 | Cetirizine EP Impurity G | 109806-71-5 |
| CHENODEOXYCHOLIC ACID | ||
| 86 | 3,7-Dioxo-5 beta cholanic acid | NA |
| CHLORDIAZEPOXIDE | ||
| 87 | Chlordiazepoxide EP-Impurity B | 5958-24-7 |
| 88 | Chlordiazepoxide EP-Impurity C | 719-59-5 |
| CHLOROQUINE | ||
| 89 | Des ethylchloroquine | 1476-52-4 |
| CHLORTHALIDONE | ||
| 90 | O-Methyl Chlorthalidone | 96512-76-4 |
| CILNIDIPINE | ||
| 91 | Cilnidipine Impurity A (Nimodipine EP Impurity C) | 70172-96-2 |
| CINACALCET | ||
| 92 | Cinacalcet Impurity 39 (Imine N-Oxide) | NA |
| CIPROFLOXACIN | ||
| 93 | Ciprofloxacin 7-Chloro-6-Desethylene Impurity | 528851-30-1 |
| 94 | Ciprofloxacin EP Impurity A | 86393-33-1 |
| 95 | Ciprofloxacin EP Impurity C | 528851-31-2 |
| 96 | N-Ethyl carbonyl Ciprofloxacin | NA |
| CITALOPRAM | ||
| 97 | Citalopram Cyanodiol Impurity | NA |
| 98 | Citalopram Impurity A | 64372-56-1 |
| 99 | N-Desmethyl Citalopram | 144025-14-9 |
| CLOBAZAM | ||
| 100 | 1-(4-Aminobenzyl)1,2,4triazole | 119192-10-8 |
| 101 | Clobazam EP Impurity A | 22316-55-8 |
| 102 | Clobazam EP Impurity B | 22316-24-1 |
| 103 | Clobazam EP Impurity C | 22316-16-1 |
| 104 | Clobazam EP Impurity D | NA |
| CLOPIDOGREL | ||
| 105 | Clopidogrel Bisulphate D3 | NA |
| 106 | Clopidogrel EP Impurity A | 144750-42-5 |
| 107 | Clopidogrel Related Compound B | 144750-52-7 |
| 108 | Clopidogrel Related Compound C | 120202-71-3 |
| CLOTRIMAZOLE | ||
| 109 | Clotrimazole EP Impurity A | 66774-02-5 |
| DACARBAZINE | ||
| 110 | Dacarbazine Related Compound B | 4656-86-4 |
| DAPIGLIFLOZIN | ||
| 111 | Dapigliflozin DAP Bromo | 461432-23-5 |
| 112 | Dapigliflozin RS Propane diol | NA |
| DAPSONE | ||
| 113 | N,N'-DIACETYL DAPSONE | 77-46-3 |
| 114 | N-acetyl Dapsone | 565-20-8 |
| DARIFENACIN | ||
| 115 | 3-Hydroxy Darifenacin | 1285875-62-8 |
| DEFERASIROX | ||
| 116 | Deferasirox D4 | 1133425-75-8 |
| DESLORATADINE | ||
| 117 | Desloratadine EP Impurity C | 79794-75-5 |
| 118 | Desloratadine N-Formyl Impurity | 117810-61-4 |
| 119 | Desloratadine N-Methyl Impurity | 38092-89-6 |
| DIAZEPAM | ||
| 120 | Diazepam - Impurity A | 1088-11-5 |
| 121 | Diazepam - Impurity D | 1022-13-5 |
| 122 | Diazepam - In House Impurity | 784-41-8 |
| 123 | Diazepam EP Impurity B | 6021-21-2 |
| 124 | Diazepam EP Impurity E | 20927-53-1 |
| DICLOFENAC SODIUM | ||
| 125 | Diclofenac 2-bromo-6-chloro Aniline Impurity | 127792-45-4 |
| 126 | Diclofenac 2-bromo-6-chloro Benzoic acid Impurity | NA |
| 127 | Diclofenac Chloroacetyl Chloride Impurity | 15308-01-7 |
| 128 | Diclofenac Ethyl Ester | 15307-77-4 |
| 129 | Diclofenac Methyl Ester | 15307-78-5 |
| 130 | Diclofenac N-Acetyl Impurity | NA |
| 131 | Diclofenac Related Compound A / Diclofenac EP Impurity A | 15362-40-0 |
| 132 | N-(2,6-Dichlorophenyl)aniline | 15307-93-4 |
| DILTIAZEM | ||
| 133 | Diltiazem EP Impurity F (Desacetyl Diltiazem) | 42399-40-6 |
| DOLUTEGRAVIR | ||
| 134 | Dolutegravir Impurity A | NA |
| 135 | Dolutegravir Impurity B | NA |
| 136 | Dolutegravir Impurity C | NA |
| 137 | Dolutegravir Impurity D | NA |
| 138 | Dolutegravir Impurity E | NA |
| 139 | Dolutegravir Impurity F | NA |
| 140 | Dolutegravir RR Isomer | 1357289-29-2 |
| 141 | Dolutegravir SR Isomer | 1309560-49-3 |
| DONEPEZIL | ||
| 142 | 5,6-Dimethoxy-1-indanone | 2107-69-9 |
| 143 | Dihydro Donepezil | 120012-04-6 |
| 144 | Donepezil Aldehyde Impurity | 22065-85-6 |
| 145 | Donepezil Related Compound A | 120014-07-5 |
| DORZALAMIDE | ||
| 146 | Dorzalamide Impurity D | 164455-27-0 |
| DOXAZOSIN | ||
| 147 | Doxazosin EP Impurity A | 3663-80-7 |
| 148 | Doxazosin EP Impurity C in salt form | 617677-53-9 |
| 149 | Doxazosin EP Impurity H in salt form | 102839-00-9 |
| DRONEDARONE | ||
| 150 | Dronedarone Hydrochloride Impurity A | NA |
| 151 | N-Desbutyl Dronedarone | 197431-02-0 |
| DULOXETINE | ||
| 152 | Duloxetine EP Impurity B | 116539-55-0 |
| 153 | Duloxetine EP Impurity D | 90-15-3 |
| 154 | Duloxetine EP Impurity G | 321-38-0 |
| 155 | Duloxetine impurity (N-formyl) | 1243540-89-7 |
| 156 | Duloxetine Impurity 4 (Racemic) | NA |
| 157 | Duloxetine related compound H | 199191-66-7 |
| 158 | Duloxetine salt | 645411-16-1 |
| EFAVIRENZ | ||
| 159 | Efavirenz Quinoline Analog | 391860-73-4 |
| 160 | Efavirenz USP RC A | 209414-27-7 |
| ELETRIPTAN HYDROBROMIDE | ||
| 161 | Eletriptan Related compound 01 | 177834-92-3 |
| EMTRICITABINE | ||
| 162 | Emtricitabine FCME | NA |
| 163 | Emtricitabine Hydroxy FTU | NA |
| ENZALUTAMIDE | ||
| 164 | Enzalutamide Amido impurity | NA |
| 165 | Enzalutamide Carboxylic acid impurity | 1242137-15-0 |
| 166 | Enzalutamide Desfluoro impurity | 915087-16-0 |
| 167 | Enzalutamide Nitro impurity | NA |
| ERYTHROMYCIN | ||
| 168 | Erythromycin EP impurity B | 992-62-1 |
| 169 | Erythromycin EP impurity C | 41451-91-6 |
| 170 | Erythromycin EP impurity D | 23893-13-2 |
| 171 | Erythromycin EP impurity E | 33396-29-1 |
| 172 | Erythromycin EP impurity F | 105822-69-7 |
| ETORICOXIB | ||
| 173 | Desmethyl Etoricoxib | 202409-31-2 |
| 174 | Etoricoxib Impurity 26 | 291756-76-8 |
| 175 | Etoricoxib Impurity D | 221615-75-4 |
| FEBENDAZOLE | ||
| 176 | Febendazole F1 compound | 63470-85-9 |
| FENBENDAZOLE | ||
| 177 | Fenbendazole Impurity B | 20367-38-8 |
| FENOFIBRATE | ||
| 178 | Fenofibrate EP Impurity A | 10547-60-1 |
| 179 | Fenofibrate EP Impurity B (Fenofibric acid) | 42017-89-0 |
| 180 | Fenofibrate EP Impurity C | 217636-47-0 |
| 181 | Fenofibrate EP Impurity D | 42019-07-8 |
| 182 | Fenofibrate EP Impurity E | 42019-08-9 |
| 183 | Fenofibrate EP Impurity F | 154356-96-4 |
| 184 | Fenofibrate EP Impurity G | 217636-48-1 |
| 185 | Fenofibrate Related Compound A | 42019-78-3 |
| FINGOLIMOD | ||
| 186 | Fingolimod Palmitate Amide | 1242271-26-6 |
| 187 | Fingolimod Stearate Amide | 1242271-27-7 |
| FLUCONAZOLE | ||
| 188 | Fluconazole Related Compound B | 81886-51-3 |
| FLUOXETINE | ||
| 189 | Fluoxetine EP Impurity A | 42142-52-9 |
| 190 | Fluoxetine EP Impurity C | 79088-29-2 |
| 191 | Fluoxetine Related Compound B | 23580-89-4 |
| 192 | Fluoxetine Related Compound C | 1026723-45-4 |
| FLURBIPROFEN | ||
| 193 | Dimethyl 2-(2-fluorobiphenyl-4-yl)-2,3-dimethylsuccinate | NA |
| 194 | Ethyl Flurbiprofen | NA |
| 195 | Flurbiprofen Impurity B | 1797883-74-9 |
| 196 | Methyl Flurbiprofen | 66202-86-6 |
| FLUTAMIDE | ||
| 197 | Flutamide Impurity C | 13312-12-4 |
| 198 | Flutamide Impurity E | 1939-27-1 |
| FLUTICASONE | ||
| 199 | Fluticasone Carboxylic Acid Impurity | NA |
| 200 | Fluticasone EP Impurity B | 948566-12-9 |
| 201 | Fluticasone EP Impurity C | 80474-24-4 |
| 202 | Fluticasone EP Impurity D | 73205-13-7 |
| 203 | Fluticasone EP Impurity G DIMER | 220589-37-7 |
| 204 | Fluticasone Propionate D3 | 80474-14-2 |
| FOLIC ACID | ||
| 205 | Folic Acid Impurity A | 4271-30-1 |
| 206 | Folic Acid Impurity B | 1004-75-7 |
| FULVESTRANT | ||
| 207 | Fulvestrant Int-TBDMS Chain | NA |
| 208 | Fulvestrant Side Chain Impurity | 148757-89-5 |
| GABAPENTIN | ||
| 209 | Desmethylated beta amino acid impurity / Isopropyl-1-(amino methyl)cyclohexane-1-carboxylate | NA |
| 210 | Gabapentin EP Impurity A | 64744-50-9 |
| 211 | Isopropyl 2-(1-(amino methyl)cyclohexyl)acetate | NA |
| GATIFLOXACIN | ||
| 212 | Gatifloxacin Impurity B | 154093-72-8 |
| 213 | Gatifloxacin Impurity C | 112811-72-0 |
| HYDROCHLOROTHIAZIDE | ||
| 214 | Hydrochlorothiazide EP Impurity A | 58-94-6 |
| 215 | Hydrochlorothiazide EP Impurity B | 121-30-2 |
| 216 | Hydrochlorothiazide EP Impurity C / Dimer | 402824-96-8 |
| IBUPROFEN | ||
| 217 | (+) Ibuprofen | NA |
| 218 | (-) Ibuprofen | NA |
| 219 | Ibuprofen Impurity A | 66622-47-7 |
| 220 | Ibuprofen Impurity B | 3585-49-7 |
| 221 | Ibuprofen Impurity C | 59512-17-3 |
| 222 | Ibuprofen Impurity D | 938-94-3 |
| 223 | Ibuprofen Impurity E | 38861-78-8 |
| 224 | Ibuprofen Impurity F | 65322-85-2 |
| 225 | Ibuprofen Impurity J | 65813-55-0 |
| 226 | Ibuprofen Impurity L | 53949-53-4 |
| 227 | Ibuprofen Impurity N | 3585-52-2 |
| 228 | Ibuprofen Impurity P | 36039-36-8 |
| IPRATROPIUM BROMIDE | ||
| 229 | Ipratropium Bromide EP Impurity F | 17812-46-3 |
| IRBESARTAN | ||
| 230 | Irbesartan Hydroxy Impurity | 160514-13-6 |
| IRINOTECAN | ||
| 231 | 7,11-Diethyl-10-hydroxycamptothecin | 947687-01-6 |
| 232 | 7-Ethyl-10-hydroxycamptothecin | 86639-52-3 |
| ISONIAZID | ||
| 233 | Isoniazid Dimer | 4329-75-3 |
| IVABRADINE | ||
| 234 | Ivabradine N-Oxide | NA |
| 235 | N-Desmethyl Ivabradine Hydrochloride | 1246638-08-3 |
| KETOCONAZOLE | ||
| 236 | 1-Acetyl-4-(4-hydroxyphenyl)piperazine | 67914-60-7 |
| 237 | Ketoconazole EP Impurity C | 83374-59-8 |
| 238 | Ketoconazole EP Impurity E | 134071-44-6 |
| 239 | Ketoconazole Trans Tosylate | NA |
| KETOPROFEN | ||
| 240 | Ketoprofen EP Impurity A | 66067-44-5 |
| LACOSAMIDE | ||
| 241 | Lacosamide EP Impurity J | 100-46-9 |
| 242 | Lacosamide Imp K | 86921-49-5 |
| LAMIVUDINE | ||
| 243 | Lamivudine EP Impurity C | 69-72-7 |
| 244 | Lamivudine EP Impurity E | 71-30-7 |
| 245 | Lamivudine EP Impurity G | 160552-55-6 |
| 246 | Lamivudine EP Impurity H / R Sulfoxide | 160552-54-5 |
| 247 | Lamivudine EP Impurity J | 145986-07-8 |
| LAMOTRIGINE | ||
| 248 | 2,3-dichloro benzoyl cyanide | NA |
| 249 | Lamotrigine Impurity C | 94213-23-7 |
| 250 | Lamotrigine Z-isomer | NA |
| LANSOPRAZOLE | ||
| 251 | Lansoprazole sulphide Impurity | NA |
| LEFLUNOMIDE | ||
| 252 | Leflunomide Impurity D | 42831-50-5 |
| LEVITIRACETAM | ||
| 253 | Levitiracetam Related compound A | 102767-31-7 |
| 254 | Levitiracetam Related compound B | 7682-20-4 |
| LEVOFLOXACIN | ||
| 255 | Descarboxyl Levofloxacin | 178964-53-9 |
| 256 | Levofloxacin Diamine Impurity | 1797510-34-9 |
| 257 | Levofloxacin N-methyl ethylene diamine / Levofloxacin USP RC E | 1346603-62-0 |
| 258 | Levofloxacin N-oxide | 117678-38-3 |
| 259 | Levofloxacin USP RC B / Q Acid | 100986-89-8 |
| 260 | Levofloxacin USP Related Compound C | 177472-30-9 |
| 261 | N-Desmethyl Levofloxacin / USP A | 117707-40-1 |
| LORAZEPAM | ||
| 262 | Lorazepam EP Impurity A | 2958-36-3 |
| LOSARTAN | ||
| 263 | Losartan EP Impurity B | 160514-13-6 |
| 264 | Losartan EP Impurity C | 114799-13-2 |
| MACITENTAN | ||
| 265 | 2-[(6-Amino-5-(4-bromophenyl)-4-pyrimidinyl)oxy]-ethanol | 2211059-05-9 |
| 266 | 5-(4-Bromophenyl)-4,6-dichloropyrimidine | 146533-41-7 |
| 267 | 5-Des-bromo-macitentan | 2211059-00-4 |
| 268 | 6-Amino-5-(4-bromophenyl)-4(3H)-pyrimidinone | 2211054-46-3 |
| 269 | Dimethyl (4-Bromophenyl)malonate | 149506-35-4 |
| 270 | N-Propylsulfamide Potassium Salt | 1393813-41-6 |
| MEBENDAZOLE | ||
| 271 | Mebendazole Amine Impurity | 52329-60-9 |
| 272 | Mebendazole D3 | 1173021-87-8 |
| MEFENAMIC ACID | ||
| 273 | Mefenamic Acid Impurity B | 21122-68-9 |
| MELOXICAM | ||
| 274 | Meloxicam EP Impurity B | 160514-13-6 |
| 275 | Meloxicam EP Impurity C | 1262333-25-4 |
| 276 | Meloxicam EP Impurity E | 35511-15-0 |
| 277 | Meloxicam USP Related Compound A | 24683-26-9 |
| MESALAZINE | ||
| 278 | Mesalazine EP Impurity F | 570-23-0 |
| 279 | Mesalazine EP Impurity G | 490-79-9 |
| 280 | Mesalazine EP Impurity H | 69-72-7 |
| 281 | Mesalazine EP Impurity J | 112725-89-0 |
| 282 | Mesalazine EP Impurity P | 887256-40-8 |
| METFORMIN | ||
| 283 | Metformin EP Impurity A | 461-58-5 |
| 284 | Metformin EP Impurity C | 1985-46-2 |
| 285 | Metformin EP Impurity F HCl | 506-59-2 |
| 286 | Metformin Impurity D | 108-78-1 |
| 287 | Metformin Impurity E | 36801-25-9 |
| METHYLPHENIDAN | ||
| 288 | Methylphenidan | 113-45-1 |
| METOLAZONE | ||
| 289 | Desmethyl Metolazone | 28524-40-5 |
| 290 | Didehydrometolazone | 4015-23-0 |
| 291 | Meta – Metalazone | 50869-25-5 |
| 292 | Metolazone Benzamide Analog | 23380-54-3 |
| 293 | Para – Metalazone | 28508-63-6 |
| MOMETASONE | ||
| 294 | Mometasone 16 Beta methyl epoxide | NA |
| 295 | Mometasone Difuroate Impurity | NA |
| 296 | Mometasone imp. G | 105102-22-5 |
| MOXIFLOXACIN | ||
| 297 | Moxifloxacin Related Compound A | 151213-15-9 |
| 298 | Moxifloxacin related compound F | 154093-72-8 |
| MYCOPHENOLATE MOFETIL | ||
| 299 | Mycophenolate Mofetil related compound B | 26675-76-3 |
| NAPROXEN | ||
| 300 | 2-Acetyl-6-methoxy naphthalene (Naproxen) | 3900-45-6 |
| 301 | 2-Bromo-6-methoxy naphthalene (Naproxen) | 5111-65-9 |
| NIFIDIPINE | ||
| 302 | Nifidipine Impurity A | 67035-22-7 |
| 303 | Nifidipine Impurity B | 50428-14-3 |
| NITROFURONTOIN | ||
| 304 | 5-Nitro-2-furoic acid | 645-12-5 |
| OFLOXACIN | ||
| 305 | Ofloxacin Impurity E | 82419-52-1 |
| OLANZAPINE | ||
| 306 | Ofloxacin Impurity F | 104721-52-0 |
| 307 | Olanzapine EP Impurity A | 138564-59-7 |
| 308 | Olanzapine N oxide / Olanzapine EP Impurity D / RC C | 174794-02-6 |
| 309 | Olanzapine Related Compound B | 221176-49-4 |
| OLAPARIB | ||
| 310 | Olaparib Furandiene Impurity | NA |
| OLMESARTAN | ||
| 311 | 4-Acetyl-2-propyl-1H-imidazole-5-carboxylic acid ethyl ester | 144690-07-3 |
| 312 | Olmesartan EP Impurity A | 144689-24-7 |
| 313 | Olmesartan EP Impurity B | 849206-43-5 |
| 314 | Olmesartan EP Impurity C | 879562-26-2 |
| 315 | Olmesartan EP Impurity D | 1020157-01-0 |
| 316 | Olmesartan Ethyl Ester | 144689-23-6 |
| 317 | Olmesartan Impurity 4 | 1443544-27-1 |
| 318 | Olmesartan Medoxomil Impurity 5 | 80841-78-7 |
| OMEPRAZOLE | ||
| 319 | Omeprazole EP Impurity C | 73590-85-9 |
| 320 | Omeprazole EP Impurity D | 88546-55-8 |
| 321 | Omeprazole EP Impurity I | 158812-85-2 |
| 322 | Omeprazole N-Oxide | 176219-04-8 |
| ONDANSETRON | ||
| 323 | Ondansetron EP Impurity A | 153139-56-1 |
| 324 | Ondansetron EP Impurity D | 99614-64-9 |
| 325 | Ondansetron EP Impurity F | 693-98-1 |
| 326 | Ondansetron EP Impurity G | 99614-03-6 |
| 327 | Ondansetron Impurity C | 27387-31-1 |
| ORLISTAT | ||
| 328 | (S)-3-Hexyl-5,6-dihydro-6-undecyl-2H-pyran-2-one | 130676-64-1 |
| 329 | Orlistat Open Ring Acid impurity (84% Purity) | 130676-66-3 |
| 330 | Orlistat Open Ring amide impurity | NA |
| 331 | Orlistat Open Ring Epimer impurity | 130793-28-1 |
| 332 | Orlistat USP Related Compound D | 130793-27-0 |
| OSELTAMIVIR PHOSPHATE | ||
| 333 | Oseltamivir Ethyl ester | NA |
| PALIPERIDONE | ||
| 334 | Paliperidone 9-Keto Impurity / Impurity E | 1189516-65-1 |
| 335 | Paliperidone N-Oxide | 761460-08-6 |
| PALONOSETRON | ||
| 336 | Palonosetron Related Compound A | 813425-83-1 |
| 337 | Palonosetron Related Compound B | 1021456-82-5 |
| PANTOPRAZOLE | ||
| 338 | Pantoprazole EP Impurity A | 127780-16-9 |
| 339 | Pantoprazole EP Impurity B | 102625-64-9 |
| PAROXETINE | ||
| 340 | Paroxetine EP Impurity B | 533-31-3 |
| 341 | Paroxetine EP Impurity G | 1012886-75-7 |
| 342 | Paroxetine Impurity E | 1396174-70-1 |
| 343 | rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride | 1346597-97-4 |
| PIPERAQUINE | ||
| 344 | Piperaquine Impurity I | 837-52-5 |
| 345 | Piperaquine Impurity III | 31502-87-1 |
| PIROXICAM | ||
| 346 | Piroxicam Impurity F | 76508-37-7 |
| PRAMIPEXOLE | ||
| 347 | (S)-4,5,6,7-Tetrahydro-N2,N6-propionyl-2,6-benzothiazolediamine | 1346617-47-7 |
| 348 | Pramipexole EP Impurity A | 106092-09-5 |
| 349 | Pramipexole EP Impurity B | 1246815-83-7 |
| 350 | Pramipexole EP Impurity E | 106006-84-2 |
| PRAZOSIN | ||
| 351 | Prazosin EP Impurity A | 23680-84-4 |
| 352 | Prazosin EP Impurity C | 60547-97-9 |
| 353 | Prazosin EP Impurity E | 102839-00-9 |
| PYRIDOXINE | ||
| 354 | Pyridoxine Impurity B | 148-51-6 |
| RALTEGRAVIR POTASSIUM | ||
| 355 | Raltegravir EP Impurity G | NA |
| RANOLAZINE | ||
| 356 | Ranolazine Dimer Imp. D | NA |
| 357 | Ranolazine Related compound B | NA |
| RIFAMYCIN | ||
| 358 | 25-Desacetyl Rifampicin | 16783-99-6 |
| 359 | 3-(Isonicotinoylhydrazonomethyl) Rifamycin | 13292-53-0 |
| RIVAROXABAN | ||
| 360 | 2-({(5S)-2-Oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl} methyl)-1H-isoindole-1,3-(2H)-dione | NA |
| 361 | 4-{4-[(5S)-5-Aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl} morpholin-3-one hydrochloride | NA |
| RIZATRIPTAN | ||
| 362 | Rizatriptan EP Impurity C | 208941-96-2 |
| ROSUVASTATIN | ||
| 363 | Rosuvastatin EP Impurity D | 503610-43-3 |
| 364 | Rosuvastatin EP Impurity G | 1242184-42-4 |
| SILDENAFIL | ||
| 365 | Sildenafil EP Impurity B | 1094598-75-0 |
| 366 | Sildenafil impurity A (Sildenafil N-Desmethyl Metabolite) | 139755-82-1 |
| 367 | Sildenafil impurity B (4-(2-ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)benzamido)-1-methyl-3-propyl-1H-pyrazole-5-carboxamide) | NA |
| 368 | Sildenafil impurity D (Sildenafil Impurity 1) | 501120-38-3 |
| 369 | Sildenafil impurity E (Sildenafil Lactam Impurity) | 139756-21-1 |
| 370 | Sildenafil impurity F (Sildenafil EP Impurity D) | 1357931-55-5 |
| SIMVASTATIN | ||
| 371 | Simvastatin Acid Ammonium Salt | 139893-43-9 |
| 372 | Simvastatin Ep Imp A | 101314-97-0 |
| 373 | Simvastatin EP Impurity B | 145576-25-6 |
| 374 | Simvastatin Hydroxy Acid Methyl Ester | 145576-26-7 |
| SITAGLIPTIN | ||
| 375 | 3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine Hydrochloride3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine Hydrochloride | 762240-92-6 |
| 376 | N-Boc Sitagliptin Acid Impurity | 486460-00-8 |
| 377 | Sitagliptin EP Impurity C | 1803026-58-5 |
| 378 | Sitagliptin S-Isomer | 833817-55-6 |
| SOLIFINACINE | ||
| 379 | 1-Phenyl 3,4 dihydroisoquinoline | 52250-50-7 |
| 380 | N-phenyl benzamide impurity | 3278-14-6 |
| 381 | Solifinacine N-oxide | 180272-28-0 |
| SULFAMETHOXAZOLE | ||
| 382 | Sulfamethoxazole Impurity A | 21312-10-7 |
| 383 | Sulfamethoxazole Impurity B | 135529-16-7 |
| SUMATRIPTAN | ||
| 384 | Sumatriptan N-Oxide (92 %) | 212069-94-8 |
| TELMISARTAN | ||
| 385 | Telmisartan EP Impurity H | 114772-40-6 |
| 386 | Telmisartan Impurity A | 152628-02-9 |
| 387 | Telmisartan Impurity E | 884330-12-5 |
| TEMOZOLOMIDE | ||
| 388 | Temozolomide related Compound A | 7008-85-7 |
| 389 | Temozolomide related Compound B | NA |
| TENOFOVIR DI-ISOPROXIL | ||
| 390 | Tenofovir | 147127-20-6 |
| 391 | Tenofovir EP impurity B | 4121-40-8 |
| 392 | Tenofovir Related Compound 14 | 1244022-52-3 |
| TIMOLOL | ||
| 393 | Timolol EP Impurity C | 610271-56-2 |
| 394 | Timolol EP Impurity D | 30165-97-0 |
| 395 | Timolol EP Impurity F | 30165-96-9 |
| 396 | Timolol EP Impurity I | NA |
| TOFACITINIB | ||
| 397 | Tofacitinib Impurity Q | 3680-69-1 |
| 398 | Tofacitinib Impurity R | 479633-63-1 |
| TOLPERISONE | ||
| 399 | 3-Hydroxy Tolperisone Maleate | 283585-02-4 |
| 400 | Carboxy Tolperisone HCl | 446063-44-1 |
| 401 | Hydroxymethyl Tolperisone | 59303-37-6 |
| TOLTERODINE | ||
| 402 | (R)-Desisopropyl Tolterodine | 194482-41-2 |
| 403 | Tolterodine Lactol Impurity | 209747-04-6 |
| 404 | Tolterodine Lactone Impurity Racemate | 40546-94-9 |
| 405 | Tolterodine Monoisopropyl Analog Racemate | 480432-14-2 |
| TRAMADOL | ||
| 406 | Tramadol Impurity A isomer | NA |
| 407 | Tramadol Impurity B | 66170-32-9 |
| TRAZADONE | ||
| 408 | Trazadone impurity A | 55290-68-1 |
| 409 | Trazadone impurity B | 62337-66-0 |
| 410 | Trazadone impurity C | NA |
| 411 | Trazadone impurity D | 1263278-80-3 |
| 412 | Trazadone impurity F | 39577-43-0 |
| TRICLABENDAZOLE | ||
| 413 | Triclabendazole Impurity D | 118353-04-1 |
| TRIMEBUTINE | ||
| 414 | N-desmethyl Trimebutine | 294882-33-0 |
| TRIMETAZIDINE | ||
| 415 | Trimetazidine Dimer | NA |
| TRIMETHOPRIM | ||
| 416 | Trimethoprim EP Impurity H | 1916-07-0 |
| 417 | Trimethoprim EP Impurity J | 118-41-2 |
| VALACYCLOVIR | ||
| 418 | Valacyclovir N-formyl | 847670-62-6 |
| VALPROIC ACID | ||
| 419 | Valproic Acid EP Impurity A | 109-52-4 |
| 420 | Valproic Acid EP Impurity D | 52061-75-3 |
| 421 | Valproic Acid EP Impurity K | 5343-52-2 |
| VALSARTAN | ||
| 422 | N-Nitrosodiethylamine | 55-18-5 |
| 423 | N-Nitrosodimethylamine | 62-75-9 |
| 424 | Valsartan related compound B | 952652-79-8 |
| VENLAFAXINE | ||
| 425 | (+) Venlafaxine | NA |
| 426 | (-) Venlafaxine | NA |
| 427 | Desvenlafaxine Succinate | NA |
| 428 | Venlafaxine N-desmethyl | 149289-30-5 |
| VERTIOXETINE | ||
| 429 | Vortioxetine N-Acetyl | NA |
| VILDAGLIPTIN | ||
| 430 | Vildagliptin Amide Impurity | 565453-39-6 |