| S.No | Being used in API | Intermediates Name | CAS Number |
|---|---|---|---|
| 1 | Flavoxate hydrochloride | 3-Methylflavone -8-Carboxylic Acid | 3468-01-7 |
| 2 | 1-(2-Chloroethyl)-piperidine hydrochloride | 2008-75-5 | |
| 3 | Fluvoxamine maleate | 1-chloro-4-methoxybutane* | 17913-18-7 |
| 4 | 4-(trifluoromethyl)benzonitrile* | 455-18-5 | |
| 5 | 5-Methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone | 61718-80-7 | |
| 6 | Olmesartan | 2-Propyl-1H-imidazole-4,5-dicarboxy acid | 58954-23-7 |
| 7 | Diethyl 2-propylImidazoledicarbonate | 144689-94-1 | |
| 8 | 4-(1-Hydroxy-1-methylethyl)-2-propyl-1H-imidazole-5-carboxylic Acid Ethyl Ester) | 144689-93-0 | |
| 9 | Candesartan | Methyl 2-amino-3-nitrobenzoate* | 57113-91-4 |
| 10 | Ticagrelor | 5-Amino-4,6-dichloro-2-(propylthio)pyrimidine | 145783-15-9 |
| 11 | Tofacitinib | (3R,4R)-1-Benzyl-N,4-dimethyl-3-piperidinamine dihydrochloride | 1062580-52-2 |
| 12 | 3-Amino-4-methylpyridine* | 3430-27-1 | |
| 13 | Chloro-7H-pyrrolo[2,3-d]pyrimidine | 3680-69-1 | |
| 14 | Dasatinib | 2-Chloro-6-Methylaniline* | 87-63-8 |
| 15 | Encorafenib | 1-(3-iodo-1-isopropyl-1H-pyrazol-4-yl)ethanone* | 1269440-49-4 |
| 16 | Olaparib | 3-Bromo-4-fluorobenzaldehyde | 77771-02-9 |
| 17 | 2-Fluoro-5-formylbenzonitrile | 218301-22-5 | |
| 18 | 1-(cyclopropylcarbonyl)piperazine | 59878-57-8 | |
| 19 | Vildagliptin | (2S)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile | 207557-35-5 |
| 20 | 3-amino-1-Adamantanol | 702-82-9 | |
| 21 | Apixaban | Ethyl chloro[(4-methoxyphenyl)hydrazono]acetate | 27143-07-3 |
| 22 | 3,3-Dichloro-1-(4-nitrophenyl)piperidin-2-one | 881386-01-2 | |
| 23 | Tamsulosin.HCl | 2-(2-Ethoxyphenoxy)ethyl Methanesulfonate | 169506-15-4 |
| 24 | R-(-)-5-(2-Amino-propyl)-2-methoxy-benzenesulfonamide | 112101-81-2 | |
| 25 | Bilastine | 2-(4-Bromo-phenyl)-2-methyl-propionic acid | 32454-35-6 |
| 26 | 2-[4-(2-chloro-ethyl)-phenyl]-2-methyl-propionic acid methyl ester | 1181267-33-3 | |
| 27 | Vilazodone hydrochloride | 5-Nitrosalicylaldehyde* | 97-51-8 |
| 28 | 5-Cyanoindole | 17380-18-6 | |
| 29 | 3-(4-Chlorobutyl)indole-5-carbonitrile | 143612-79-7 | |
| 30 | Dronedarone Hydrochloride | 2-n-Butyl-5-nitrobenzofuran | 133238-87-6 |
| 31 | (2-butyl-5-nitrobenzofuran-3-yl)(4-hydroxyphenyl)methanone | 141645-16-1 | |
| 32 | 2-butyl-3-[4-(3-dibutylaminopropoxy)benzoyl]-5-nitrobenzofuran | 141645-23-0 | |
| 33 | Treprostinil | 2-allyl-3-methoxybenzaldehyde | 94956-98-6 |
| 34 | Vestipitant | 3,5-Dichloro-2-hydroxybenzaldehyde* | 90-60-8 |
| 35 | Montelukast ,Dexketoprofen | 3'-Bromoacetophenone* | 2142-63-4 |
| 36 | Pyridine derivatives | 3-Amino-4-methylpyridine* | 3430-27-1 |
| 37 | 2-Cyano-5-bromopyridine(Tedizolid) | 97483-77-7 | |
| 38 | 2,5-dibromopyridine ( Abiraterone Acetate , Perampanel) | 624-28-2 | |
| 39 | 2-Amino-5-bromopyridin (Pexidartinib) | 1072-97-5 | |
| 40 | 5-Amino-2-chloropyridine | 5350-93-6 | |
| 41 | 2-Chloro-5-hydroxypyridine | 41288-96-4 | |
| 42 | 4-Bromopyridine hydrochloride* | 19524-06-2 | |
| 43 | 2-Acetylpyridine | 1122-62-9 | |
| 44 | 3-Acetylpyridine | 350-03-8 | |
| 45 | Key starting materials (KSMs) | 4-Nitropyrazole* | 2075-46-9 |
| 46 | DL- Dithiothreitol (DTT )* | 3483-12-3 | |
| 47 | 1,3-Butadiene diepoxide | 1464-53-5 | |
| 48 | 4-Methylresorcinol* | 496-73-1 | |
| 49 | Bromoacetaldehyde diethyl acetal | 2032-35-1 | |
| 50 | Bromoacetaldehyde Dimethyl Acetal | 7252-83-7 | |
| 51 | Dimethyl 1,3-acetonedicarboxylate | 1830-45-2 | |
| 52 | 4-Hydroxy-7-methoxyquinoline* | 82121-05-9 | |
| 53 | Trimethyl sulfoxonium chloride* | 5034-06-0 | |
| 54 | 5-Benzyloxyindole-2-carboxylic acid ethyl ester* | 37033-95-7 | |
| 55 | 2,3-Dibromo acetophenone* | 18523-22-3 |