| Structure |
Chemical Name |
CAS |
MF |
 |
Pregabalin Impurity 99 |
949890-75-9 |
C16H23NO4 |
 |
Roxatidine Impurity 9 |
87327-60-4 |
C4H6O4 |
 |
Regofenib impurity K |
|
|
|
|
Chlorpheniramine Impurity 4 |
|
|
|
|
Peramivir Impurity 43 |
|
|
 |
N-(4-BROMOBUTYL)-7-(4-BROMOBUTOXY)-QUINOLINE-2(1H)-ONE |
1076199-56-8 |
C17H21Br2NO2 |
 |
7-methoxy-3,4-dihydro-1-naphthalenylacetonitrile |
861960-34-1 |
C13H13NO |
![METHYL 2-[(2,5-DICHLOROBENZOYL)AMINO]ACETATE](/StructureFile/ChemBookStructure4/GIF/CB0665441.gif) |
METHYL 2-[(2,5-DICHLOROBENZOYL)AMINO]ACETATE |
338965-44-9 |
C10H9Cl2NO3 |
 |
Betaxolol EP Impurity A |
67193-95-7 |
C14H23NO2 |
 |
3,5-Bis(benzyloxy)benzoic acid benzyl ester |
50513-72-9 |
C28H24O4 |
![[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid](/CAS/GIF/117-38-4.gif) |
[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid |
117-38-4 |
C12H15N3O4S |
 |
2-Amino-5-bromobenzaldehyde |
29124-57-0 |
C7H6BrNO |
 |
(R)-(+)-3-(N-METHYLAMINO)-1-(2-THIENYL)-1-PROPANOL |
116539-57-2 |
C8H13NOS |
 |
PLANTAGININ |
26046-94-6 |
C21H20O11 |
 |
2-(2-Chloroethyl)thiophene |
19995-38-1 |
C6H7ClS |
 |
2'',3'',5''-Triacetyl -azacytidine |
10302-78-0 |
C14H18N4O8 |
 |
N-Methyl Pantoprazole, mixture of 1 and 3 isomers |
624742-53-6 |
C17H17F2N3O4S |
 |
N-DESMETHYLGALANTHAMINE |
41303-74-6 |
C16H19NO3 |
|
|
Tafluprost Impurity 17 |
|
|
|
|
Rosuvastatin Impurity 160 （Sodium salt) |
|
|
|
|
Rosuvastatin Impurity 143 |
|
|
|
|
Rosuvastatin Impurity 131 |
|
|
|
|
Rosuvastatin Impurity 125 |
|
|
|
|
Metabotropic glutamate receptor 5 (GRM5) Antibody |
|
|
|
|
Terlipressin Impurity 2 (des-Gly1,Gly2) |
|
|
![BENZHYDRYL 6,6-DIHYDROPENICILLIC ACID 1-OXIDE[TAZOBACTAM INTERMEDIATE]](/CAS/20180713/GIF/87579-78-0.gif) |
BENZHYDRYL 6,6-DIHYDROPENICILLIC ACID 1-OXIDE[TAZOBACTAM INTERMEDIATE] |
87579-78-0 |
C21H21NO4S |
|
|
4-(2-((2R,3R)-3-(2,5-difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butan-2-yl)thiazol-4-yl)benzamide |
|
|
|
|
Ertapenem Impurity C(USP) |
|
|
|
|
Ertapenem Impurity 22 |
|
|
|
|
(1-carboxy-1-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)ethyl)-L-cysteine |
|
|
 |
Lisinopril R,S,S-Diketopiperazine |
219677-82-4 |
C21H29N3O4 |
![4-Chloromethyl-N-[4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]phenyl]benzamide](/CAS/GIF/404844-11-7.gif) |
4-Chloromethyl-N-[4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]phenyl]benzamide |
404844-11-7 |
C24H20ClN5O |
 |
6-Mercaptopurine disulfide |
49808-20-0 |
C10H6N8S2 |
 |
Dexivacaine |
24358-84-7 |
C15H22N2O |
 |
5-ForMyl-8-hydroxycarbostyril |
68304-21-2 |
C10H7NO3 |
|
|
Capecitabine Related Compound A |
|
|
 |
1-Pyrrolidineaceticacid,2-(aminocarbonyl)-,(2S)-(9CI) |
277751-02-7 |
C7H12N2O3 |
 |
2-Pyrrolidinecarbonitrile,1-acetyl-,(2S)-(9CI) |
700376-84-7 |
C7H10N2O |
 |
1-Azetidinesulfonamide(9CI) |
654073-32-2 |
C3H8N2O2S |
 |
1-Piperazinecarboxylicacid,4-methyl-,ethylester(6CI,9CI) |
59325-11-0 |
C8H16N2O2 |
 |
(1S,4R)-4-Amino-2-cyclopenten-1-carboxylic Acid Hydrochloride |
134234-04-1 |
C6H9NO2 |
 |
erythronolide B |
3225-82-9 |
C21H38O7 |
 |
desmethylmianserin |
71936-92-0 |
C17H18N2 |
 |
3-demethylthiocolchicine |
87424-25-7 |
C21H23NO5S |
 |
2,6-di-tert-butyl-4-methylene-2,5-cyclohexadienone |
2607-52-5 |
C15H22O |
 |
2-acetyl-2-decarboxamidooxytetracycline |
6542-44-5 |
C23H25NO8 |
 |
7,8-dehydro-9,10-desacetyldoxorubicinone |
64845-67-6 |
C19H12O6 |
 |
(S)-4-(4-Nitrobenzyl)-2-oxazolidinone |
139264-55-4 |
C10H10N2O4 |
 |
6-(Benzyloxy)-9-((1S,3S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-((4-methoxyphenyl)diphenylmethyl)-9H-purin-2-amine |
142217-80-9 |
C53H49N5O4 |
 |
2-(4-Hydroxymethylphenyl)phenylsulfonamide |
158144-55-9 |
C15H14O3 |
![4-[2-(CYCLOPROPYLMETHOXY)ETHYL]PHENOL](/CAS/GIF/63659-16-5.gif) |
4-[2-(CYCLOPROPYLMETHOXY)ETHYL]PHENOL |
63659-16-5 |
C12H16O2 |
![2-[6-(2-hydroxy-2-phenyl-ethyl)-1-methyl-2-piperidyl]-1-phenyl-ethanol](/CAS/GIF/552-72-7.gif) |
2-[6-(2-hydroxy-2-phenyl-ethyl)-1-methyl-2-piperidyl]-1-phenyl-ethanol |
552-72-7 |
C22H29NO2 |
 |
4-Amino-1-3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-a-D-erythro-pentofuranosyl)-2(1H)-pyrimidinone |
134790-40-2 |
C23H19F2N3O6 |
 |
Granisetron Impurity C |
160177-67-3 |
C17H22N4O |
 |
Pyrazinecarboxylic acid, 5-methyl-, 1-oxide (9CI) |
98502-96-6 |
C6H6N2O3 |
 |
1,4-Butanediaminium, N1,N4-diethyl-N1,N1,N4,N4-tetrakis(1-methylethyl)-, bromide (1:2) |
1621467-18-2 |
C20H46BrN2+ |
 |
1,6,10,14-Hexadecatetraen-3-ol, 3,7,11,15-tetramethyl-, (6Z,10E)- |
3790-76-9 |
C20H34O |
|
|
Bisoprolol Impurity 51 |
|
|
 |
2-Deoxy-2,2-difluoro-D-ribofuranose-3,5-dibenzoate-1-methanesulfonate |
134877-42-2 |
C20H18F2O8S |
|
|
Pitavastatin Impurity 105 |
|
|
|
|
Nirmatrelvir Impurity 11 |
|
|
|
|
Bumetanide Impurity 21 |
|
|
|
|
Amoxicillin related impurities K |
|
|
|
|
Amoxicillin related impurities K |
|
|
![4'-(Hydroxymethyl)-[1,1'-Biphenyl]-2-Carboxylic Acid](/CAS/GIF/158144-54-8.gif) |
4'-(Hydroxymethyl)-[1,1'-Biphenyl]-2-Carboxylic Acid |
158144-54-8 |
C14H12O3 |
|
|
Brivaracetam Impurity 118 |
|
|
|
|
1-(4-((2-(4-hydroxypiperidin-1-yl)ethyl)(methyl)carbamoyl)benzyl)piperidine-4-carboxylic acid |
2975124-11-7 |
|
|
|
Empagliflozin Impurity 108 |
|
|
|
|
Perospirone Impurity 28 |
|
|
|
|
Perospirone Impurity 23 |
|
|
|
|
Perospirone Impurity 16 |
|
|
|
|
Dolutegravir Impurity 24 |
|
|
|
|
Paxlovid Impurity 18 |
|
|
|
|
Related impurities of fluoxetine sodium 8 |
|
|
|
|
Fondaparinux sodium impurity 15 |
|
|
|
|
Fondaparinux Sodium Impurity 10 |
|
|
|
|
Oxacillin sodium Impurity E |
|
|
|
|
ltrombopag Impurity 26 |
|
|
|
|
Revefenacin Impurity 19 |
|
|
|
|
Caspofungin Impurity 11 |
|
|
|
|
Miglitol Isomer ImpurityA |
|
|
|
|
sodium (6R,7S)-7-(2-mercaptoacetamido)-7-methoxy-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate |
|
|
|
|
Olodaterol Impurity 33 |
|
|
 |
(1R,4S)-N-Desmethyl Sertraline Hydrochloride |
675126-08-6 |
C16H15Cl2N.ClH |
 |
3-(4-Formylaminobutyryl)pyridine |
887355-56-8 |
C10H12N2O2 |
 |
Didesmethyl Erlotinib Hydrochloride Salt |
183320-12-9 |
C20H20ClN3O4 |
 |
DESVENLAFAXINE SUCCINATE |
448904-47-0 |
C20H31NO6 |
 |
Desloratadine IMpurity B |
117796-50-6 |
C19H19BrN2 |
|
|
Itraconazole IMpurity B |
|
|
 |
Benzene, 1-(3-chloropropyl)-3-(trifluoroMethyl)- |
82258-76-2 |
C10H10ClF3 |
![N-Methyl-N-((3S,4S)-4-Methylpiperidin-3-yl)-7H-pyrrolo[2,3-d]pyriMidin-4-aMine](/CAS/GIF/1260614-73-0.gif) |
N-Methyl-N-((3S,4S)-4-Methylpiperidin-3-yl)-7H-pyrrolo[2,3-d]pyriMidin-4-aMine |
1260614-73-0 |
C13H19N5 |
![2-(5-oxo-5H-chroMeno[2,3-b]pyridin-7-yl)propanoic acid](/CAS/GIF/52549-19-6.gif) |
2-(5-oxo-5H-chroMeno[2,3-b]pyridin-7-yl)propanoic acid |
52549-19-6 |
C15H11NO4 |
![1H-BenziMidazole, 2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]Methyl]sulfinyl]-1-(2,2,2-trifluoroethyl)-](/CAS/GIF/1187926-84-6.gif) |
1H-BenziMidazole, 2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]Methyl]sulfinyl]-1-(2,2,2-trifluoroethyl)- |
1187926-84-6 |
C18H15F6N3O2S |
 |
4,5-dihydro-a-(hydroxyMethyl)-a,3-diMethyl-5-oxo-1-phenyl-1H-Pyrazole-4-Methanesulfonic acid |
1242471-40-4 |
C13H16N2O5S |
![16α,17-[(1RS)-Butylidenebis(oxy)]-11β-hydroxy-17-(hydroxyMethyl)-D-hoMoandrosta-1,4-diene-3,17a-dione (Mixture of DiastereoMers)](/CAS/GIF/1040085-99-1.gif) |
16α,17-[(1RS)-Butylidenebis(oxy)]-11β-hydroxy-17-(hydroxyMethyl)-D-hoMoandrosta-1,4-diene-3,17a-dione (Mixture of DiastereoMers) |
1040085-99-1 |
C25H34O6 |
 |
2-BroMo-1-cyclopropyl-2-(3-fluorophenyl)ethanone |
1359829-72-3 |
C11H10BrFO |
 |
N-((4-(5-Methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)acetaMide |
198471-06-6 |
C18H16N2O4S |
 |
N-((S)-1-(((S)-1-Hydroxy-3-Methylbutyl)aMino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide |
289472-81-7 |
C19H24N4O3 |
 |
(Z)-N-(2-nitrovinyl)acetaMide |
1238305-24-2 |
C4H6N2O3 |
 |
Azilsartan iMpurity |
1604812-35-2 |
C35H28N4O11 |