| Structure | Chemical Name | CAS | MF | 
| ![(16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione](../cas/20180808/gif/216453-74-6.gif) | (16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione | 216453-74-6 | C25H32O6 | 
|  | 6(S)-Hydroperoxy Simvastatin | 149949-01-9 | C25H38O7 | 
|  | Russupteridine IV | 2535-20-8 | C13H18N4O6 | 
| ![2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one](../cas/gif/197010-2d20-1.gif) | 2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one | 197010-20-1 | C24H29NO4 | 
|  | 5,6-trans-Ergocalciferol | 51744-66-2 | C28H44O | 
|  | 2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one | 923571-15-7 | C17H15NO4 | 
|  | 4-(2-nitrophenyl)Morpholin-3-one | 845729-41-1 | C10H10N2O4 | 
|  | Irbesartan IMpurity E |  | C25H28N6O | 
|  | LeflunoMide EP IMpurity G | 724429-16-7 | C12H12N2O2 | 
|  | Telmisartan impurity C |  |  | 
|  | Itraconazole iMpurity E |  |  | 
|  | Edoxaban Isomer (RRR) | 1255529-24-8 | C24H30ClN7O4S | 
|  | 1-NaphthaleneacetaMide, 1,2,3,4-tetrahydro-7-Methoxy- | 92041-01-5 | C13H17NO2 | 
|  | 1,4,7,10-Tetraazacyclododecane-1,7-diacetic acid | 112193-75-6 | C12H24N4O4 | 
| ![7-ethyl-5H-chroMeno[2,3-b]pyridin-5-one](../cas/gif/53944-31-3.gif) | 7-ethyl-5H-chroMeno[2,3-b]pyridin-5-one | 53944-31-3 | C14H11NO2 | 
| ![2-Methyl-10H-thieno[2,3-b][1,5]benzodiazepin-4-aMine](../cas/gif/612503-08-9.gif) | 2-Methyl-10H-thieno[2,3-b][1,5]benzodiazepin-4-aMine | 612503-08-9 | C12H11N3S | 
| ![IMp. A (EP): 8-Chloro-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one](../) | IMp. A (EP): 8-Chloro-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one |  |  | 
| ![IMp. C (EP): 8-Chloro-11-(piperazin-1-yl)-5H- dibenzo[b,e][1,4]diazepine](../) | IMp. C (EP): 8-Chloro-11-(piperazin-1-yl)-5H- dibenzo[b,e][1,4]diazepine |  |  | 
|  | 21-Dehydro-16α-hydroxy Prednisolone | 1188271-73-9 | C21H26O6 | 
|  | (6α,11β)-11,20-Dihydroxy-6-Methyl-3-oxopregna-1,4,17(20)-trien-21-al | 1338549-02-2 | C22H28O4 | 
|  | (1R)-2-chloro-1-(3,4-difluorophenyl)-1-ethanol | 1212376-05-0 | C8H7ClF2O | 
| ![2-[[(3aR,4S,6R,6aS)-6-[7-Chloro-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]tetrahydro-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]oxy]-ethanol](../cas/20150408/gif/376608-75-2.gif) | 2-[[(3aR,4S,6R,6aS)-6-[7-Chloro-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]tetrahydro-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]oxy]-ethanol | 376608-75-2 | C17H24ClN5O4S | 
|  | Fluconazole IMpurity F |  | C13H12F2N6O | 
|  | Erlotinib IMpurity A | 1058132-82-3 | C22H25N3O4 | 
|  | Apixaban iMpurity 5 |  |  | 
|  | cefaclor iMpurity C | 143059-69-2 | C15H14ClN3O4S | 
|  | ceftazidiMe iMpurity B | 1236700-64-3 |  | 
|  | pidotiMod iMpurity D | 162148-15-4 | C9H12N2O4S | 
|  | Irinotecan Hydroxyl Acid | 142677-15-4 | C22H22N2O6 | 
|  | CyclopropanaMine, 2-(4-fluorophenyl)-(hydrochloride)(1:1),(1R,2S)- | 1314324-00-9 | C9H11ClFN | 
| ![(1S,2S,3R,5S)-3-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylsulfinyl)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol](../cas/20150408/gif/cb92667983.gif) | (1S,2S,3R,5S)-3-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylsulfinyl)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol | 1644461-85-7 | C23H28F2N6O5S | 
|  | AtracuriuM IMpurity C (Mixture of DiastereoMers) | 86293-35-8 |  | 
|  | AtracuriuM IMpurity E (cis-Quaternary Acid) |  |  | 
|  | AztreonaM IMpurity B |  |  | 
|  | Ceftriaxone IMpurit E |  |  | 
|  | Cetirizine IMpurity-6 |  | C21H25ClN2O3 | 
|  | Cinacalcet IMpurity 10 | 1809324-40-0 | C29H28F3NO2S | 
|  | Dasatinib IMpurity 5 |  |  | 
|  | Diacerein IMpurity F | 13928-72-8 | C35H36O16 | 
|  | D-Valganciclovir Hydrochloride | 1393911-57-3 | C14H23ClN6O5 | 
|  | Entecavir IMpurity E |  |  | 
|  | EzetiMibe IMpurity 1 | 190595-66-5 | C24H22FNO3 | 
|  | Flurbiprofen IMpurity B | 1797883-74-9 | C18H17FO4 | 
|  | IMatinib DiPiperidine IMpurity |  |  | 
|  | levocetirizine IMpurity |  |  | 
|  | OseltaMivir IMpurity F |  |  | 
|  | RocuroniuM BroMide IMpurity 19 |  |  | 
|  | S-(+)-O-DesMethyl-Venlafaxine-d6 | 1062609-99-7 | C16H25NO2 | 
|  | SalMeterol IMpurity F |  | C25H37NO4 | 
|  | Sitagliptin Defuoro IMpurity 4 | 486459-98-7 | C15H19F2NO4 | 
|  | Sulpiride IMpurity F |  |  | 
|  | trans-Ibuprofen IMpurity G | 1391054-15-1 | C26H32O4 | 
|  | EthanediaMide  iMpurity F | 480452-37-7 | C16H22ClN5O3 | 
|  | Paroxetine IMpurity |  |  | 
|  | Sitagliptin EP Impurity 4 |  |  | 
|  | Acetamide, N-(4-hydroxyphenyl)-N-nitroso- | 146897-60-1 | C8H8N2O3 | 
| ![3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]-](../cas/20210305/gif/2402776-83-2.gif) | 3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]- | 2402776-83-2 | C16H17N7O2S | 
|  | Iohexol ImpuritiesE |  |  | 
|  | TERT-BUTYL (R)-6-CHLORO-5-HYDROXY-3-OXOHEXANOATE | 404958-08-3 | C10H17ClO4 | 
| ![2-(3-(4-(4-(1-(3-(cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-2-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile](../) | 2-(3-(4-(4-(1-(3-(cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-2-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile |  |  | 
| ![8-chloro-11-(1-((5-methylpyridin-3-yl)methyl)piperidin-4-yl)-11H-benzo[5,6]cyclohepta[1,2-b]pyridine](../) | 8-chloro-11-(1-((5-methylpyridin-3-yl)methyl)piperidin-4-yl)-11H-benzo[5,6]cyclohepta[1,2-b]pyridine |  |  | 
|  | Bumetanide Photodegradable Impurity 16 |  |  | 
|  | Bisoprolol Impurity 47 |  |  | 
|  | Gadobutrol Impurity 11(Ammonium salt) |  |  | 
|  | Flomoxef Impurity F |  |  | 
|  | Tegoprazan Impurity 15 |  |  | 
|  | Nirmatrelvir Impurity 8 |  |  | 
|  | Nirmatrelvir Impurity 2 |  |  | 
|  | (5-(2-fluorophenyl)-1H-pyrrol-3-yl)methanamine hydrochloride |  |  | 
|  | Rocuronium Bromide Impurity 24 、25 |  |  | 
|  | Roxadustat Impurity 17 |  |  | 
|  | Perospirone Impurity 20 | 1002359-81-0 |  | 
|  | Dolutegravir Impurity 19 |  |  | 
|  | Cephalexin Impurity I |  |  | 
|  | Fondaparinux sodium impurity 6 |  |  | 
|  | Fondaparinux sodium impurity 2 |  |  | 
|  | Oxacillin sodium  Impurity I |  |  | 
|  | Mixture of Cefoxitin  Impurity E&F |  |  | 
|  | Revefenacin Impurity 22 |  |  | 
|  | Lasmiditan Impurity 7 |  |  | 
|  | Febuxostat impurity BAC |  |  | 
|  | 4-(3,4-DICHLOROPHENYL)-1,2,3,4-TETRAHYDRO-1-NAPHTHALENOL | 866018-46-4 | C16H14Cl2O | 
|  | Lasmiditan Impurity 9 |  |  | 
|  | Letermovir Impurity 2 |  |  | 
|  | 1H-Imidazole-2-carboxylic acid | 16042-25-4 | C4H4N2O2 | 
|  | Olodaterol Impurity 19 |  |  | 
|  | Ethacridine Impurity 12 |  |  | 
| ![2-[4-[(2RS)-2-HYDROXY-3[(1-METHYLETHYL)AMINO]PROPOXY]PHENYL]ACETONITRILE](../cas/gif/29277-73-4.gif) | 2-[4-[(2RS)-2-HYDROXY-3[(1-METHYLETHYL)AMINO]PROPOXY]PHENYL]ACETONITRILE | 29277-73-4 | C14H20N2O2 | 
|  | (-)-Nebivolol | 118457-16-2 | C22H25F2NO4 | 
|  | 2-Hydroxymethyl Olanzapine | 174756-45-7 | C17H20N4OS | 
|  | 5-Hydroxymethyl Flucloxacillin | 75524-31-1 | C19H17ClFN3O6S | 
|  | 6-Hydroxy-5-methoxy-1-indanone | 90843-62-2 | C10H10O3 | 
|  | 9-cis Acitretin | 419534-31-9 | C21H26O3 | 
|  | N-Desmethylvinblastine | 18172-50-4 | C45H56N4O9 | 
|  | Rabeprazole Sulfone | 117976-47-3 | C18H21N3O4S | 
|  | 6-BROMO-3 H-ISOBENZOFURAN-1-ONE | 19477-73-7 | C8H5BrO2 | 
|  | TOPOTECANACETATE | 123948-88-9 | C25H27N3O7 | 
|  | dimethyl 2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridine-3,5-dicarb oxylate | 21829-09-4 | C17H18N2O6 | 
| ![7-[(2-aMinoethyl)aMino] -1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid](../cas/20150408/gif/cb92679157.gif) | 7-[(2-aMinoethyl)aMino] -1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid |  | C14H16FN3O3 | 
| ![(S)-(1R,3s,5S)-8-Methyl-8-azabicyclo[3.2.1]oct-6-en-3-yl 3-hydroxy-2-phenylpropanoate](../cas/20150408/gif/61616-97-5.gif) | (S)-(1R,3s,5S)-8-Methyl-8-azabicyclo[3.2.1]oct-6-en-3-yl 3-hydroxy-2-phenylpropanoate | 61616-97-5 | C17H21NO3 |