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Structure Chemical Name CAS MF
Alogliptin Impurity 22 Alogliptin Impurity 22
Afatinib Impurity YHQ Afatinib Impurity YHQ
Ethyl 4-bromo-3-hydroxybutyrate Ethyl 4-bromo-3-hydroxybutyrate 32224-01-4 C6H11BrO3
Afatinib impurity 84 Afatinib impurity 84
Benzeneacetic acid, 3-(2-amino-1,1-dimethyl-2-oxoethyl)-α,α-dimethyl-5-(1H-1,2,4-triazol-1-ylmethyl)- Benzeneacetic acid, 3-(2-amino-1,1-dimethyl-2-oxoethyl)-α,α-dimethyl-5-(1H-1,2,4-triazol-1-ylmethyl)- 2469244-33-3 C17H22N4O3
1,4-BIS[3,4-DIHYDRO-2(1H)-QUINOLINON-7-OXY]BUTANE 1,4-BIS[3,4-DIHYDRO-2(1H)-QUINOLINON-7-OXY]BUTANE 882880-12-8 C22H24N2O4
Aripiprazole N,N-Dioxide Aripiprazole N,N-Dioxide 573691-13-1 C23H27Cl2N3O4
7-Chloro-4-(4-hydroxyanilino)quinoline 7-Chloro-4-(4-hydroxyanilino)quinoline 81099-86-7 C15H11ClN2O
Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetaMide) Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetaMide) 120512-03-0 C17H21N5O
Afatinib IMpurity J Afatinib IMpurity J 1456696-14-2 C18H22N4O4
Aripiprazole EP impurity D Aripiprazole EP impurity D
ETHYL 3,4-EPOXYBUTANOATE ETHYL 3,4-EPOXYBUTANOATE 32223-97-5 C6H10O3
Alogliptin Impurity A Alogliptin Impurity A
Alcaftadine N-Oxide Alcaftadine N-Oxide 952649-75-1 C19H21N3O2
Acarbose Impurity B Acarbose Impurity B
Acarbose Impurity E Acarbose Impurity E
3-Hydroxy Agomelatine 3-Hydroxy Agomelatine 166526-99-4 C15H17NO3
Acarbose Impurity G Acarbose Impurity G
Calcium bis[4-{[(1S,3R)-1-([1,1'-biphenyl]-4-ylmethyl)-3-methyl-4-oxo-4-(propan-2-yloxyl)butyl]amino}-4-oxobutanoate] Calcium bis[4-{[(1S,3R)-1-([1,1'-biphenyl]-4-ylmethyl)-3-methyl-4-oxo-4-(propan-2-yloxyl)butyl]amino}-4-oxobutanoate] C50H60CaN2O10
2,3-Dehydrosilybin B 2,3-Dehydrosilybin B 142796-24-5 C25H20O10
monocalciummono(4-(((2R,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy- 4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) monocalciummono(4-(((2R,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy- 4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) C24H28CaNO5
3-methyl-2-pentylphenol 3-methyl-2-pentylphenol 1823068-39-8 C12H18O
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(1E)-2-(4-methyl-5-thiazolyl)ethenyl]-8-oxo-7-[(2-phenylacetyl)amino]-, (4-methoxyphenyl)methyl ester, (6R,7R)- 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(1E)-2-(4-methyl-5-thiazolyl)ethenyl]-8-oxo-7-[(2-phenylacetyl)amino]-, (4-methoxyphenyl)methyl ester, (6R,7R)- 104146-11-4 C29H27N3O5S2
diltiazem hydrochloride diltiazem hydrochloride 103532-27-0 C22H27ClN2O4S
2'-[(1H-Tetrazol-5-yl)biphenyl-4-yl]Methanol 2'-[(1H-Tetrazol-5-yl)biphenyl-4-yl]Methanol 160514-13-6 C14H12N4O
(2R,4S)-4-([1,1'-Biphenyl]-4-ylmethyl)-2-methyl-4-(2,5-dioxopyrrolidin-1-yl)butanoic acid (2R,4S)-4-([1,1'-Biphenyl]-4-ylmethyl)-2-methyl-4-(2,5-dioxopyrrolidin-1-yl)butanoic acid 1639970-62-9 C22H23NO4
Ofloxacin/Levofloxacin Impurity A Ofloxacin/Levofloxacin Impurity A
Afatinib Impurity 53 Afatinib Impurity 53
Afatinib Impurity 68 Afatinib Impurity 68
Agomelatine Impurity 1 Agomelatine Impurity 1
Afatinib Impurity 70 Afatinib Impurity 70 125781-04-6 C4H7ClO2
AMIKACIN IMPURITY A AMIKACIN IMPURITY A
Azlocillin Opern-Ring Decarboxylation Impurity Azlocillin Opern-Ring Decarboxylation Impurity 99795-14-9 C19H25N5O5S
AMOXICILLIN TRIHYDRATE IMP. D (EP) AS SODIUM SALT:(4S)-2-[[[(2R)-2-AMINO-2-(4-HYDROXYPHENYL)ACETYL]AMINO]-CARBOXYMETHYL]-5,5-DIMETHYLTHIAZOLIDINE-4-CARBOXYLIC ACID SODIUM SALT (PENICILLOICACIDS OF AMO AMOXICILLIN TRIHYDRATE IMP. D (EP) AS SODIUM SALT:(4S)-2-[[[(2R)-2-AMINO-2-(4-HYDROXYPHENYL)ACETYL]AMINO]-CARBOXYMETHYL]-5,5-DIMETHYLTHIAZOLIDINE-4-CARBOXYLIC ACID SODIUM SALT (PENICILLOICACIDS OF AMO 1642629-94-4 C16H21N3O6S
Anastrozole Impurity 13 Anastrozole Impurity 13
benidipine benidipine 119009-45-9 C28H31N3O6
α,α-Dibromo-o-tolunitrile α,α-Dibromo-o-tolunitrile 655-63-0 C8H5Br2N
D-hydroxyphenylglycylamoxicillin) D-hydroxyphenylglycylamoxicillin) 188112-75-6 C24H26N4O7S
1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene 1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene 32820-10-3 C11H14O2
1-NaphthaleneacetaMide, 1,2,3,4-tetrahydro-7-Methoxy- 1-NaphthaleneacetaMide, 1,2,3,4-tetrahydro-7-Methoxy- 92041-01-5 C13H17NO2
Deschloroaripiprazole Deschloroaripiprazole 203395-81-7 C23H28ClN3O2
Afatinib IMpurity A Afatinib IMpurity A
Afatinib IMpurity G Afatinib IMpurity G
AlMotriptan Related CoMpound B AlMotriptan Related CoMpound B 1246860-65-0 C19H25N3O6S
Alogliptin Imp.13 Alogliptin Imp.13
Alogliptin Related Compound 14 Alogliptin Related Compound 14 1820685-30-0 C18H23N5O3
Alogliptin benzoate impurity K Alogliptin benzoate impurity K 1618644-32-8 C25H25N5O3
Amoxicillin Impurity P Amoxicillin Impurity P C16H19N3O5S
N-Des-tetrahydrofuran N-(6,7-Dimethoxy-4,4a-dihydroquinazolin-4-amine) Alfuzosin N-Des-tetrahydrofuran N-(6,7-Dimethoxy-4,4a-dihydroquinazolin-4-amine) Alfuzosin 928780-95-4 C24H30N8O4
Afatinib Impurity 50 Afatinib Impurity 50
Afatinib Impurity 75 Afatinib Impurity 75 2348580-72-1 C7H14N2O
Acarbose Impurity IV (JP) Acarbose Impurity IV (JP) C13H21NO7
Azlocillin Impurity 8 Azlocillin Impurity 8
3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone 3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone 120004-79-7 C13H16ClNO2
1-Azetidinesulfonamide(9CI) 1-Azetidinesulfonamide(9CI) 654073-32-2 C3H8N2O2S
N-DESMETHYLGALANTHAMINE N-DESMETHYLGALANTHAMINE 41303-74-6 C16H19NO3
Hydroxy Adapalene Hydroxy Adapalene 1346599-76-5 C28H28O4
Adefovir iMpurity Adefovir iMpurity 1875153-79-9 C15H24N5O6P
tert-butyl 4-cyclohexylpiperazine-1-carboxylate tert-butyl 4-cyclohexylpiperazine-1-carboxylate 1224935-95-8 C15H28N2O2
(R,R)-Palonosetron N-Oxide (R,R)-Palonosetron N-Oxide C19H24N2O2
7-PACE Impurity 2 7-PACE Impurity 2
Desloratadine IMpurity 3 Desloratadine IMpurity 3 1346600-61-0 C19H19ClN2
EMpagliflozin iMpurity 11 EMpagliflozin iMpurity 11
LCZ Impurity LCZ Impurity 753421-85-1 C20H25NO2
(3S,5R)-4-[5-([1,1'-Biphenyl]-4-ylmethyl)-3-methyl-2-oxopyrrolidin-1-yl]-4-oxobutanoic acid (3S,5R)-4-[5-([1,1'-Biphenyl]-4-ylmethyl)-3-methyl-2-oxopyrrolidin-1-yl]-4-oxobutanoic acid C22H23NO4
Ethyl (2R,4S)-4-([1,1'-biphenyl]-4-ylmethyl)-4-[4-(propan-2-yloxy)-4-oxobutanamido]-2-methylbutanoate Ethyl (2R,4S)-4-([1,1'-biphenyl]-4-ylmethyl)-4-[4-(propan-2-yloxy)-4-oxobutanamido]-2-methylbutanoate C27H35NO5
Formoterol EP Impurity E Formoterol EP Impurity E 1616967-26-0 C20H26N2O4
(Glu3)-Carbetocin (Impurity D) (Glu3)-Carbetocin (Impurity D)
Δ3-7-ACT Δ3-7-ACT
(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-aMino-2-Methylpentanoic acid hydrochloride (2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-aMino-2-Methylpentanoic acid hydrochloride 1038924-71-8 C18H22ClNO2
(2S,4S)-5-(Biphenyl-4-yl)-4-[(3-carboxypropionyl)amino]-2-methylpentanoic acid ethyl ester,calcium salt(2:1) (2S,4S)-5-(Biphenyl-4-yl)-4-[(3-carboxypropionyl)amino]-2-methylpentanoic acid ethyl ester,calcium salt(2:1)
ethyl(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-(4-ethoxy-4-oxobutanamido)-2-methylpentanoate ethyl(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-(4-ethoxy-4-oxobutanamido)-2-methylpentanoate C26H33NO5
phenyl (4-((6-carbamoyl-7-methoxyquinolin-4-yl)oxy)-2-chlorophenyl)carbamate phenyl (4-((6-carbamoyl-7-methoxyquinolin-4-yl)oxy)-2-chlorophenyl)carbamate 417722-95-3 C24H18ClN3O5
Lacosamide Impurity – K Lacosamide Impurity – K
(1R,3aS,4E,7aR)-4-[(2E)-2-[(3S,5R)-3,5-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methylenecyclohexylidene]ethylidene]octahydro-7a-methyl-1-[(1R,4S)-1,4,5-trimethylhexyl]-1H-Indene (1R,3aS,4E,7aR)-4-[(2E)-2-[(3S,5R)-3,5-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methylenecyclohexylidene]ethylidene]octahydro-7a-methyl-1-[(1R,4S)-1,4,5-trimethylhexyl]-1H-Indene 2229745-37-1 C40H74O2Si2
Ofloxacin/Levofloxacin Impurity B Ofloxacin/Levofloxacin Impurity B
(2R,4S)-isopropyl5-([1,1'-biphenyl]-4-yl)-4-(2,5-dioxopyrrolidin-1- yl)-2-methylpentanoate (2R,4S)-isopropyl5-([1,1'-biphenyl]-4-yl)-4-(2,5-dioxopyrrolidin-1- yl)-2-methylpentanoate C25H29NO4
Amylmetacresol EP impurity A Amylmetacresol EP impurity A 876473-73-3 C12H18O
5-methyl-2-(2-methylbutyl)phenol 5-methyl-2-(2-methylbutyl)phenol C12H18O
7-ADCA Impuirty 1 7-ADCA Impuirty 1
7-PACE Impurity 1 7-PACE Impurity 1
(R)-Fluvastatin EP Impurity E (R)-Fluvastatin EP Impurity E
5-(2-cyclopropyl-2-oxo-1-phenylethyl)-4,5,6,7-tetrahydrothieno [3,2-c]pyridin-2-yl acetate 5-(2-cyclopropyl-2-oxo-1-phenylethyl)-4,5,6,7-tetrahydrothieno [3,2-c]pyridin-2-yl acetate 1391194-45-8 C20H21NO3S
(Gly8-OH)-Carbetocin (Impurity B) (Gly8-OH)-Carbetocin (Impurity B)
D-Asn4-Carbetocin (Impurity F) D-Asn4-Carbetocin (Impurity F)
5-Chloro AcesulfaMe 5-Chloro AcesulfaMe 72827-08-8 C4H4ClNO4S
Ethyl (2R,4S)-4-([1,1'-biphenyl]-4-ylmethyl)-2-methyl-4-(2,5-dioxopyrrolidin-1-yl)butanoate Ethyl (2R,4S)-4-([1,1'-biphenyl]-4-ylmethyl)-2-methyl-4-(2,5-dioxopyrrolidin-1-yl)butanoate 1038924-97-8 C24H27NO4
3'-chloro-3'-deoxythymidine (zidovudine impurity) 3'-chloro-3'-deoxythymidine (zidovudine impurity)
Ofloxacin/Levofloxacin Impurity E Ofloxacin/Levofloxacin Impurity E
4-(4-Hydroxy-3-hydroxymethyl-phenoxy)-benzonitrile 4-(4-Hydroxy-3-hydroxymethyl-phenoxy)-benzonitrile C14H11NO3
monocalciummono(4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5- methoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) monocalciummono(4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5- methoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) C23H26CaNO5
(2R,4S)-Isopropyl 5-([1,1''-biphenyl]-4-yl)-4-(4-isopropoxy-4-oxobutanamido)-2-methylpentanoate (2R,4S)-Isopropyl 5-([1,1''-biphenyl]-4-yl)-4-(4-isopropoxy-4-oxobutanamido)-2-methylpentanoate 2216755-67-6 C28H37NO5
EP Impurity Catalog EP Impurity Catalog
2,4,6,3',5'-pentamethoxybiphenyl 2,4,6,3',5'-pentamethoxybiphenyl 84212-55-5 C17H20O5
(Asp4)-Carbetocin (Impurity G) (Asp4)-Carbetocin (Impurity G)
((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane) ((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane) 115540-28-8 C40H72O2Si2
(S,R)-Palonosetron N-Oxide (S,R)-Palonosetron N-Oxide C19H24N2O2
2-Hydroxymethyl Olanzapine 2-Hydroxymethyl Olanzapine 174756-45-7 C17H20N4OS
Flomoxef Impurity 2 Flomoxef Impurity 2
4-Isobutylacetophenone (Ibuprofen impurity) 4-Isobutylacetophenone (Ibuprofen impurity)
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