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Structure Chemical Name CAS MF
Esomeprazole Impurity 42 Esomeprazole Impurity 42
Efinaconazole Related Impurity 13 Efinaconazole Related Impurity 13 2055912-03-1 C24H32FN5O
Acyclovir impurity R Acyclovir impurity R
(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole compound with 6-methoxy-1-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole (1:1) (((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole compound with 6-methoxy-1-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole (1:1)
Esomeprazole Impurity 3 Esomeprazole Impurity 3 1346599-85-6 C26H30N4O4S
Eltrombopag Impurity 8 Eltrombopag Impurity 8
(2R,3R,4R,5R)-2-(4-amino-2-oxo (2R,3R,4R,5R)-2-(4-amino-2-oxo 1415316-72-1 C12H16N4O7
4-amino-1-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1,3,5-triazin-2(1H)-one compound with (2R,3S,4R,5S)-2-(hydroxymethyl)-5-methyltetrahydrofuran-3,4-diol 4-amino-1-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1,3,5-triazin-2(1H)-one compound with (2R,3S,4R,5S)-2-(hydroxymethyl)-5-methyltetrahydrofuran-3,4-diol
Acyclovir Impurity 15 Acyclovir Impurity 15
Itropopa Impurity 17 Itropopa Impurity 17
rac 4-Desmethoxy-4-nitro Omeprazole rac 4-Desmethoxy-4-nitro Omeprazole 317807-10-6 C16H16N4O4S
DesMethyl Erlotinib Carboxylate Acid DesMethyl Erlotinib Carboxylate Acid 882172-60-3 C21H19N3O5
Acyclovir IMpurity J Acyclovir IMpurity J
Acyclovir Impurity O Acyclovir Impurity O
Eltrombopag Impurity 3 Eltrombopag Impurity 3
Azacitidine Impurity EJ Azacitidine Impurity EJ
5-METHOXY-2-(METHYLTHIO)BENZIMIDAZOLE 5-METHOXY-2-(METHYLTHIO)BENZIMIDAZOLE 91168-31-9 C9H10N2OS
2-Pyrazinecarboxylic acid, 6-methyl-, 4-oxide 2-Pyrazinecarboxylic acid, 6-methyl-, 4-oxide 51037-31-1 C6H6N2O3
Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetic acid) Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetic acid) 1338800-82-0 C17H20N4O2
Aripiprazole iMpurity 4 Aripiprazole iMpurity 4 1424857-63-5 C36H42Cl2N4O4
Alogliptin Impurity B Alogliptin Impurity B 865758-98-1 C17H19N5O2
methyl(E)-4-(methylamino)but-2-enoate methyl(E)-4-(methylamino)but-2-enoate 915788-22-6 C6H11NO2
ethyl 4-dimethylamino-3-hydroxy-butanoate ethyl 4-dimethylamino-3-hydroxy-butanoate 90227-57-9 C8H17NO3
(E)-N-(2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)acetamide (E)-N-(2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)acetamide 178677-39-9 C15H19NO2
Aripiprazole Impurity 11 Aripiprazole Impurity 11
(R)-2-((3-methyl-6-(3-((1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)amino)piperidin-1-yl)-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile (R)-2-((3-methyl-6-(3-((1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)amino)piperidin-1-yl)-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile C23H25N7O4
Acarbose Impurity H Acarbose Impurity H
Anastrozole EP Impurity I Anastrozole EP Impurity I 120511-91-3 C15H17ClN2
Afatinib Impurity 74 Afatinib Impurity 74 1259015-90-1 C7H13NO2
Afatinib Impurity 78 Afatinib Impurity 78
Anastrozole Impurity I Anastrozole Impurity I
N2-Methyl Alfuzosin Hydrochloride N2-Methyl Alfuzosin Hydrochloride 72104-34-8 C19H28ClN5O4
Anastrozole iMpurity A Anastrozole iMpurity A
1-NaphthaleneethanaMine, 1,2,3,4-tetrahydro-7-Methoxy- 1-NaphthaleneethanaMine, 1,2,3,4-tetrahydro-7-Methoxy- 59081-66-2 C13H19NO
1H-Indazole, 4,5-dichloro- 1H-Indazole, 4,5-dichloro- 1020243-02-0 C7H4Cl2N2
Acarbose 1,1-α,α-Glycoside IMpurity Acarbose 1,1-α,α-Glycoside IMpurity 610271-07-3 C25H43NO18
Afatinib IMpurity C Afatinib IMpurity C
Aripiprazole N1-Oxide Aripiprazole N1-Oxide
Afatinib Impurity L (Afatinib N-Oxide) Afatinib Impurity L (Afatinib N-Oxide)
(S)-Alogliptin Benzoate Salt (S)-Alogliptin Benzoate Salt 1638544-64-5 C25H27N5O4
Agomelatine Impurity 1 Agomelatine Impurity 1
Amoxicillin Impurity U Amoxicillin Impurity U C16H19N3O5S
Alogliptin Impurity 7 Alogliptin Impurity 7
Afatinib Impurity 51 Afatinib Impurity 51
Afatinib Impurity 66 Afatinib Impurity 66
Alectinib Impurity 10 Alectinib Impurity 10 1256584-81-2 C28H29N3O3
α,α,α'',5-Tetramethyl-1,3-benzenediacetonitrile α,α,α'',5-Tetramethyl-1,3-benzenediacetonitrile 120512-38-1 C14H16N2
Azlocillin dioxide Impurity Azlocillin dioxide Impurity
N-(4-アミノ-6,7-ジメトキシキナゾール-2-イル)-N-メチルプロピレンジアミン塩酸塩 N-(4-アミノ-6,7-ジメトキシキナゾール-2-イル)-N-メチルプロピレンジアミン塩酸塩 81403-69-2 C14H22ClN5O2
1-NaphthaleneethanaMine, 7-Methoxy-N-[2-(7-Methoxy-1-naphthalenyl)ethyl]- 1-NaphthaleneethanaMine, 7-Methoxy-N-[2-(7-Methoxy-1-naphthalenyl)ethyl]- 1385018-57-4 C26H27NO2
Alogliptin Impurity 19 Alogliptin Impurity 19
Trelagliptin Impurity Y Trelagliptin Impurity Y 1938080-42-2 C13H10FN3O3
Amoxicillin EP impurity P Amoxicillin EP impurity P C16H19N3O5S
Afatinib impurity 49 Afatinib impurity 49
Afatinib Impurity OLQ Afatinib Impurity OLQ
Amoxicillin Oxidized Impurities Amoxicillin Oxidized Impurities
Amoxicillin Impurity ABCDEFGHIJKLM Amoxicillin Impurity ABCDEFGHIJKLM
2,4-Pyrimidinediol, 6-chloro- (9CI) 2,4-Pyrimidinediol, 6-chloro- (9CI) 107577-09-3 C4H3ClN2O2
{3-[2-(DiMethylaMino)ethyl]-5-[(pyrrolidine-1-yl)sulfonylMethyl]-1H-indol-1-yl}Methanol {3-[2-(DiMethylaMino)ethyl]-5-[(pyrrolidine-1-yl)sulfonylMethyl]-1H-indol-1-yl}Methanol 1018676-02-2 C18H27N3O3S
1-(2,6-dichlorophenyl)piperazine 1-(2,6-dichlorophenyl)piperazine 63386-61-8 C10H12Cl2N2
AMoxicillin iMpurity L AMoxicillin iMpurity L C16H19N3O5S
Anastrozole IMpurity (alfa1 , alfa1, alfa3, alfa3-TetraMethyl-5-(1H-1,2,4-triazol-1-ylMethyl)-1,3-BenzenediacetaMide) Anastrozole IMpurity (alfa1 , alfa1, alfa3, alfa3-TetraMethyl-5-(1H-1,2,4-triazol-1-ylMethyl)-1,3-BenzenediacetaMide) 120512-04-1 C17H23N5O2
(R)-α-[(2,2-DiMethyl-1-oxopropyl)aMino]-4-hydroxybenzeneacetic Acid (R)-α-[(2,2-DiMethyl-1-oxopropyl)aMino]-4-hydroxybenzeneacetic Acid 205826-86-4 C13H17NO4
Alogliptin Impurity C Alogliptin Impurity C 1108731-49-2 C20H23N5O3
Alfuzosin Alfuzosin 19216-53-6 C12H16N4O2
(R)-2-((6-(3-aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzoic acid (R)-2-((6-(3-aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzoic acid C18H22N4O4
N-(2,3-Dichloro-phenyl)-N'-[2-(2,3-dichloro-phenylamino)-ethyl]-ethane-1,2-diamine N-(2,3-Dichloro-phenyl)-N'-[2-(2,3-dichloro-phenylamino)-ethyl]-ethane-1,2-diamine C16H17Cl4N3
(E)-4-BROMO-N,N-DIMETHYLBUT-2-ENAMIDE (E)-4-BROMO-N,N-DIMETHYLBUT-2-ENAMIDE 137131-09-0 C6H10BrNO
Almotriptan Impurity 1 Almotriptan Impurity 1 334981-13-4 C17H25N3O3S
Amoxicillin Impurity Z Amoxicillin Impurity Z C16H19N3O5S
Afatinib impurity 46 Afatinib impurity 46
arformoterol tartrate impurity arformoterol tartrate impurity
Afatinib Impurity QAQ Afatinib Impurity QAQ
Afatinib Impurity SHO Afatinib Impurity SHO 2223677-65-2 C38H30Cl2F2N8O6
Anastrozole Impurity IV Anastrozole Impurity IV
4-O-[4-[[(1S)-4β,5α,6β-トリヒドロキシ-3-(ヒドロキシメチル)-2-シクロヘキセン-1β-イル]アミノ]-4,6-ジデオキシ-α-D-グルコピラノシル]-D-グルコース 4-O-[4-[[(1S)-4β,5α,6β-トリヒドロキシ-3-(ヒドロキシメチル)-2-シクロヘキセン-1β-イル]アミノ]-4,6-ジデオキシ-α-D-グルコピラノシル]-D-グルコース 68128-53-0 C19H33NO13
2-アミノ-5,6-ジクロロ-3(4H)-キナゾリン酢酸 (ANAGRELIDE IMPURITY B)アナグレリド不純物B 2-アミノ-5,6-ジクロロ-3(4H)-キナゾリン酢酸 (ANAGRELIDE IMPURITY B)アナグレリド不純物B 1159977-03-3 C10H9Cl2N3O2
2-(7-Methoxynaphthalen-1-yl)acetamide 2-(7-Methoxynaphthalen-1-yl)acetamide 138113-07-2 C13H13NO2
Anastrozole iMpurity D Anastrozole iMpurity D
2-Methyl-2-(4-vinylphenyl)propanoic acid 2-Methyl-2-(4-vinylphenyl)propanoic acid 1256584-72-1 C12H14O2
Anastrozole IMpurity (2-(3-((1H-1,2,4-triazol-1-yl)Methyl)-5-(1-aMino-2-Methyl-1-oxopropan-2-yl)phenyl)-2-Methylpropanoi Anastrozole IMpurity (2-(3-((1H-1,2,4-triazol-1-yl)Methyl)-5-(1-aMino-2-Methyl-1-oxopropan-2-yl)phenyl)-2-Methylpropanoi
Afatinib IMpurity I Afatinib IMpurity I 1637254-93-3 C22H19BrClFN4O3
Aripiprazole iMpurity 2 Aripiprazole iMpurity 2 1424857-93-1 C14H18Cl2N2
N-acetyl-N-(2-(7-Methoxynaphthalen-1-yl)ethyl)acetaMide N-acetyl-N-(2-(7-Methoxynaphthalen-1-yl)ethyl)acetaMide 1379005-34-1 C17H19NO3
Afatinib Impurity M Afatinib Impurity M
Agomelatine Impurity 1 Agomelatine Impurity 1 1352139-51-5 C15H19NO2
(E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine (E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine 468104-18-9 C13H17NO
Alosetron Impurity 1 Alosetron Impurity 1 1011293-30-3 C17H16N4O2
Acarbose Impurity F Acarbose Impurity F
Amoxicillin EP Impurity K Amoxicillin EP Impurity K C16H19N3O5S
Apixaban Degradation of Impurity Apixaban Degradation of Impurity
Afatinib Impurity 52 Afatinib Impurity 52
Afatinib Impurity 67 Afatinib Impurity 67
Alogliptin Impurity 30 Alogliptin Impurity 30
Afatinib Impurity 77 Afatinib Impurity 77 26404-20-6 C5H7ClO3
Azlocillin Opern-Ring Impurity Azlocillin Opern-Ring Impurity 96688-41-4 C20H25N5O7S
AMOXICILLIN TRIHYDRATE IMP. C (EP): (4S)-2-[5-(4-HYDROXYPHENYL)-3,6-DIOXOPIPERAZIN-2-YL]-5,5-DIMETHYL-THIAZOLIDINE-4-CARBOXYLIC ACID (AMOXICILLIN DIKETOPIPERAZINES) AMOXICILLIN TRIHYDRATE IMP. C (EP): (4S)-2-[5-(4-HYDROXYPHENYL)-3,6-DIOXOPIPERAZIN-2-YL]-5,5-DIMETHYL-THIAZOLIDINE-4-CARBOXYLIC ACID (AMOXICILLIN DIKETOPIPERAZINES)
2-Piperidinone, 3-chloro-1-(4-nitrophenyl)- 2-Piperidinone, 3-chloro-1-(4-nitrophenyl)- 2512213-45-3 C11H11ClN2O3
Anastrozole Impurity 14 Anastrozole Impurity 14
Ethyl 5,6-dichloro-3,4-dihydro-2(1H)-iminoquinazoline-3-acetate hydrobromide Ethyl 5,6-dichloro-3,4-dihydro-2(1H)-iminoquinazoline-3-acetate hydrobromide 70381-75-8 C12H14BrCl2N3O2
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