| Structure | Chemical Name | CAS | MF | 
| ![7-[[[(CyanoMethyl)thio]acetyl]aMino]-7-Methoxy Cephalosporanic Acid](../cas/gif/56796-16-8.gif) | 7-[[[(CyanoMethyl)thio]acetyl]aMino]-7-Methoxy Cephalosporanic Acid | 56796-16-8 | C15H17N3O7S2 | 
|  | 7S-Cefdinir | 178601-89-3 | C14H13N5O5S2 | 
|  | Dehydroxy BroMocelecoxib | 170570-75-9 | C17H13BrF3N3O2S | 
|  | Desethylene Norfloxacin Hydrochloride | 75001-77-3 | C14H16FN3O3 | 
|  | p-(2,3-Epoxypropoxy)benzyl Alcohol | 4204-78-8 | C10H12O3 | 
|  | α-Etoposide | 100007-53-2 | C29H32O13 | 
|  | N-Desmethyl-N-benzyl Sildenafil | 1446089-82-2 | C28H34N6O4S | 
|  | 4-Hydroxy AtoMoxetine Oxalate | 457634-21-8 | C19H23NO6 | 
|  | 6-Chloro-1-Ethyl-4-Oxo-7-(Piperazin-1-yl)-1,4-Dihydroquinoline-3-Carboxylic acid | 67681-84-9 | C16H18ClN3O3 | 
|  | Afatinib IMpurity J | 1456696-14-2 | C18H22N4O4 | 
|  | Aprepitant iMpurity A |  |  | 
|  | Atorvastatin LactaM Phenanthrene CalciuM Salt | 1046378-58-8 | C33H35CaFN2O6 | 
|  | Avanafil IMpurity 7 |  |  | 
|  | Desfluoro flurbiprofen axetil | 1685278-08-3 | C19H20O4 | 
|  | Desloratadine IMpurity 6 | 38092-90-9 | C20H21ClN2 | 
|  | ErtapeneM Ring Open IMpurity |  |  | 
|  | LincoMycin iMpurity C |  |  | 
|  | Norfloxacin iMpurity E |  |  | 
|  | Posaconazole iMpurity 2 |  |  | 
| ![Quetiapine IMpurity [2-(2-Piperazin-1-yl)ethoxy)ethanol]](../cas/20200611/gif/2206135-50-2.gif) | Quetiapine IMpurity [2-(2-Piperazin-1-yl)ethoxy)ethanol] | 2206135-50-2 | C25H18N2S2 | 
|  | Rabeprazole iMpurity (Chloro interMediate) |  |  | 
|  | TaMsulosin IMpurity F |  | C20H28N2O5S | 
|  | TiaMulin IMpurity E (TiaMulone,11-Oxo TiaMulin) | 113323-39-0 | C28H45NO4S | 
| ![2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethanol](../cas/20150408/gif/848814-27-7.gif) | 2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethanol | 848814-27-7 | C21H27N3O3S | 
| ![(3aR,7R,7aR)-2,2-Diethyl-3a,6,7,7a-tetrahydro-7-[(Methylsulfonyl)oxy]-1,3-benzodioxole-5-carboxylic Acid Ethyl Ester](../cas/20150408/gif/204254-90-0.gif) | (3aR,7R,7aR)-2,2-Diethyl-3a,6,7,7a-tetrahydro-7-[(Methylsulfonyl)oxy]-1,3-benzodioxole-5-carboxylic Acid Ethyl Ester | 204254-90-0 | C15H24O7S | 
|  | TorseMide Carboxylic Acid | 113844-99-8 | C16H18N4O5S | 
|  | (6-BroMo-2-ethyl-3-benzofuranyl)(3,5-dibroMo-4-hydroxyphenyl)Methanone | 1402819-05-9 | C17H11Br3O3 | 
|  | ApreMilast IMpurity |  |  | 
| ![5'-broMo-[2,3'-bipyridin]-6'(1'H)-one](../cas/20150408/gif/381233-79-0.gif) | 5'-broMo-[2,3'-bipyridin]-6'(1'H)-one | 381233-79-0 | C10H7BrN2O | 
|  | Piperacillin Impurity N |  |  | 
|  | 2-(1-(dimethylamino)ethyl)phenol 2,3-dihydroxysuccinate | 26050-44-2 | C10H15NO | 
|  | 1,11-ditosyl-1,4,8,11-tetraazacyclotetradecane dihydrochloride | 117152-73-5 | C24H36N4O4S2 | 
|  | PeraMpanel | 684648-40-6 | C10H10BNO2 | 
|  | 3-CHLORO-N-(3-METHOXYPHENYL)PROPANAMIDE | 21261-76-7 | C10H12ClNO2 | 
|  | Amlodipine Impurity 31 | 496024-43-2 | C20H22ClNO5 | 
|  | Fudosteine Impurity 5 |  |  | 
|  | Rasagiline Impurity 4 | 1175018-79-7 | C12H14ClN | 
|  | Miconazole EP Impurity F | 47447-55-2 | C18H14Cl4N2O | 
|  | Raltegravir USP RC E | 1193687-87-4 | C20H22N6O5 | 
|  | Dehydronitrosonisoldipine | 87375-91-5 | C20H22N2O5 | 
|  | Brexpiprazole Impurity 49 | 1700655-67-9 | C13H14N2O2S | 
|  | Etoricoxib Impurity 38 | 887479-63-2 | C13H17NO2S | 
|  | Pemetrexed Impurity 19 | 1644286-36-1 | C20H21N5O8 | 
|  | Empagliflozin Impurity 31 |  |  | 
|  | Iguratimod | 123663-50-3 | C18H16N2O6S | 
|  | 1,4-bis(4-((1,4,8,11-tetraazacyclotetradecan-4,8,11-trifluoroacetyl- 1-yl)methyl)benzyl)-8,11-difluoroacetyl-1,4,8,11-tetraazacyclotetra decane |  |  | 
|  | Imidafenacin Related Compound 10 | 212756-27-9 | C21H23N3O | 
|  | Aprepitant | 1242175-36-5 | C20H18F7NO2 | 
|  | Idebenone Impurity 5 | 88543-33-3 | C18H28O5 | 
|  | Entacapone Impurity 4 | 1202160-40-4 | C11H8N2O6 | 
| ![L-Leucine, N-formyl-, (1S)-1-[[(2S,3S)-3-hexyl-4-oxo-2-oxetanyl]methyl]tridecyl ester](../cas/20210111/gif/1119226-56-0.gif) | L-Leucine, N-formyl-, (1S)-1-[[(2S,3S)-3-hexyl-4-oxo-2-oxetanyl]methyl]tridecyl ester | 1119226-56-0 | C30H55NO5 | 
|  | Itraconazole Impurity 17 | 854372-78-4 | C14H15Cl2N3O5S | 
| ![sodium (41S,12R,13aS)-13a-ethyl-12-hydroxy-2,3,41,5,6,12, 13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5] naphthyridine-12-carboxylate](../cas/20211123/gif/53448-45-6.gif) | sodium (41S,12R,13aS)-13a-ethyl-12-hydroxy-2,3,41,5,6,12, 13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5] naphthyridine-12-carboxylate | 53448-45-6 | C20H24N2O3 | 
|  | Rivaroxaban Impurity 35 | 2206360-74-7 | C23H24N4O6 | 
|  | Tirofiban hydrochloride monohydrate Impurity 7 | 2250244-28-9 | C13H19NO5S | 
|  | Acarbose Impurity G |  |  | 
|  | Imidafenacin Related Compound 7 | 191592-57-1 | C16H13N | 
|  | 17β-Cyanmethyl-oestra-1,3,5(10)-trien-3,17β-diol | 16669-06-0 | C20H25NO2 | 
|  | Cefaclor Impurity 6 |  |  | 
|  | Cephalexin Impurity 6 |  | C16H17N3O4S | 
|  | Pitavastatin Impurity 42 |  |  | 
|  | Rocuronium bromide Impurity J |  | C32H53BrN2O4 | 
|  | Tofacitinib Impurity 72 |  |  | 
|  | Tofacitinib Impurity 81 |  |  | 
|  | Topiroxostat Impurity 9 | 2044708-04-3 | C7H10N6O | 
|  | Vinorelbine EP Impurity C |  |  | 
|  | Atracurium Impurity 26 |  |  | 
|  | Aztreonam Impurity 2 |  |  | 
|  | Benazepril Impurity E |  | C24H28N2O5 | 
|  | Canagliflozin Impurity 44 |  |  | 
|  | Clotrimazole Impurity 3 |  |  | 
|  | Dithio-Desethyl Carbodenafil | 1610830-81-3 | C22H28N6OS2 | 
|  | Erlotinib Impurity 57 |  |  | 
|  | Esomeprazole Impurity 41 |  |  | 
|  | Oseltamivir Impurity 29 |  |  | 
|  | Pramipexole Impurity 36 |  |  | 
|  | Riboflavin Impurity 1 | 64480-68-8 | C16H20N2O7 | 
|  | Rocuronium Bromide Impurity 10 |  |  | 
|  | Rocuronium Bromide Impurity 23 |  | C23H39NO3 | 
|  | Adefovir Impurity 10 |  |  | 
|  | Apremilast Impurity SY |  |  | 
|  | Atracurium Impurity L |  |  | 
|  | Cefoxitin EP Impurity G |  |  | 
|  | Dextrorotation lansoprazole Impurity L |  |  | 
|  | lansoprazole Impurity 25 |  |  | 
|  | Mirabegron Enantiomer Impurity |  |  | 
|  | Ropivacaine Impurity 44 |  |  | 
|  | Ropivacaine Impurity 7 |  |  | 
|  | Sugammadex sodium Org199010-1 Impurity |  |  | 
|  | Sugammadex sodium Org226100-1 Impurity |  |  | 
|  | Afatinib impurity 32 |  |  | 
|  | Butyphthalide impurity 26 |  |  | 
|  | Butyphthalide impurity 32 |  |  | 
|  | Canagliflozin Impurity 30 |  |  | 
|  | Celecoxib Impurity 20 | 343853-74-7 | C6H7N3O3S | 
|  | Emtricitabine Impurity CFTU1 |  |  | 
|  | Esomeprazole Impurity 34 |  |  | 
|  | Febuxostat Impurity 82 |  |  | 
|  | Febuxostat Impurity 87 |  |  | 
|  | Gefitinib Impurity R |  |  |