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Keywords: 18162-48-6 , 872-50-4 , Methylene Chloride , naphthalene , THF , Titanium Dioxide

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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
6-O-DesMethoxyethyl-6-O-chloroethyl Erlotinib Hydrochloride 6-O-DesMethoxyethyl-6-O-chloroethyl Erlotinib Hydrochloride 183320-04-9 C21H21Cl2N3O3
Macitentan IMpurity Macitentan IMpurity 556796-88-4 C17H15Br2N5O4S
4-((4-broMophenyl)(1H-1,2,4-triazol-1-yl)Methyl)benzonitrile 4-((4-broMophenyl)(1H-1,2,4-triazol-1-yl)Methyl)benzonitrile 143030-54-0 C16H11BrN4
Acetic acid, 2-[2-[4-(diphenylMethyl)-1-piperazinyl]ethoxy]- Acetic acid, 2-[2-[4-(diphenylMethyl)-1-piperazinyl]ethoxy]- 83881-53-2 C21H26N2O3
2-(DiethylaMino)-N-(2,3-diMethylphenyl)acetaMide Hydrochloride 2-(DiethylaMino)-N-(2,3-diMethylphenyl)acetaMide Hydrochloride 857170-72-0 C14H23ClN2O
4-Hydroxy Darunavir 4-Hydroxy Darunavir 313682-97-2 C27H37N3O8S
Deschloroaripiprazole Deschloroaripiprazole 203395-81-7 C23H28ClN3O2
O-[(Guanin-9-yl)Methyl] Acyclovir O-[(Guanin-9-yl)Methyl] Acyclovir 166762-90-9 C14H16N10O4
3-(4-Carboethoxy)phenyl propanal 3-(4-Carboethoxy)phenyl propanal 151864-81-2 C12H14O3
(2,6-Xylyloxy)acetyl Lopinavir (2,6-Xylyloxy)acetyl Lopinavir 943250-65-5 C47H58N4O7
(S)-IsotiMolol (TiMolol IMpurity B) (S)-IsotiMolol (TiMolol IMpurity B) 158636-96-5 C13H24N4O3S
Afatinib IMpurity A Afatinib IMpurity A
Afatinib IMpurity G Afatinib IMpurity G
Articaine IMpurity F (Articaine Acid PropionaMide HCl) Articaine IMpurity F (Articaine Acid PropionaMide HCl)
Avanafil iMpurity 4 Avanafil iMpurity 4 874482-97-0 C8H11Cl2NO
Clopidogrel IMpurity 4 Clopidogrel IMpurity 4 801319-16-4 C15H14ClNO2S
Dehydro Azelnidipine Dehydro Azelnidipine 918659-10-6 C33H32N4O6
DiazepaM IMpurity F DiazepaM IMpurity F 31269-33-7 C16H13ClN2O
LaMotrigine IMpurity LaMotrigine IMpurity
Ipragliflozin Impurity 6 Ipragliflozin Impurity 6
Ibrutinib Impurity 27 Ibrutinib Impurity 27 2031255-26-0 C26H28N6O3
Clopidogrel Impurity 59 Clopidogrel Impurity 59 1122047-98-6 C25H26ClNO6S
Ozagrel Impurity B Ozagrel Impurity B
Ceftriaxone Sodium impurity F Ceftriaxone Sodium impurity F
(R)-5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-3-(2-(2-oxopyrrolidin-1-yl)-2-phenylethyl)pyrimidine-2,4(1H,3H)-dione (R)-5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-3-(2-(2-oxopyrrolidin-1-yl)-2-phenylethyl)pyrimidine-2,4(1H,3H)-dione 2248628-93-3 C32H28F5N3O4
Famotidine EP Impurity I HCl Famotidine EP Impurity I HCl C8H15N7O2S3
替扎尼定EP杂质C 替扎尼定EP杂质C 1147548-83-1 C16H14Cl2N10S2
nicergoline impurity Q nicergoline impurity Q
Loratadine Impurity 19 Loratadine Impurity 19 79779-58-1 C22H24N2O2
(Z)-2-chloro-3-hydroxyacrylaldehyde (Z)-2-chloro-3-hydroxyacrylaldehyde 50704-42-2 C3H3ClO2
(trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4''-fluoro-[1,1''-biphenyl]-4-yl)-1-methylpiperidine hydrochloride (trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4''-fluoro-[1,1''-biphenyl]-4-yl)-1-methylpiperidine hydrochloride
Ticagrelor Related Compound 39 Ticagrelor Related Compound 39
Erlotinib Impurity 32 Erlotinib Impurity 32
Pramipexole Impurity 36 Pramipexole Impurity 36
Teneligliptin Impurity 3 Teneligliptin Impurity 3
Erlotinib Hydrochloride iMpurity 52 Erlotinib Hydrochloride iMpurity 52
Ornidazole Impurity J Ornidazole Impurity J 742020-47-9 C7H12N4O3
Daidzein-4′-glucoside Daidzein-4′-glucoside 58970-69-7 C21H20O9
Aprepitant iMpurity 45 Aprepitant iMpurity 45
Afatinib Impurity 75 Afatinib Impurity 75 2348580-72-1 C7H14N2O
Androstan-17-one,2,3-epoxy-16-(1-pyrrolidinyl) Androstan-17-one,2,3-epoxy-16-(1-pyrrolidinyl) 159325-45-8 C23H35NO2
(2b,3a,16b,17b)-2,16-Bispiperidino-3,17-diacetoxy-5-androstane (2b,3a,16b,17b)-2,16-Bispiperidino-3,17-diacetoxy-5-androstane 13529-31-2 C33H54N2O4
Palbociclib Impurity 59 Palbociclib Impurity 59 1430196-98-7 C14H20N4O4
Landiolol impurity Z Landiolol impurity Z
Vitamin K1 Impurity 1 Vitamin K1 Impurity 1 19274-66-9 C31H46O2
Teneligliptin Impurity 13 Teneligliptin Impurity 13
Ceftazidime EP Impurity D Ceftazidime EP Impurity D 73547-69-0 C45H44N6O7S2
Nicergoline EP Impurity G Nicergoline EP Impurity G 57935-65-6 C23H24BrN3O2
Benzenesulfonamide, 4-[5-(4-methylphenyl)-2-oxido-3-(trifluoromethyl)-1H-pyrazol-1-yl]- Benzenesulfonamide, 4-[5-(4-methylphenyl)-2-oxido-3-(trifluoromethyl)-1H-pyrazol-1-yl]- 2356153-95-0 C17H14F3N3O3S
2-Pyrrolidinecarbonitrile, 1-(2-aminoacetyl)-, hydrochloride (1:1), (2S)- 2-Pyrrolidinecarbonitrile, 1-(2-aminoacetyl)-, hydrochloride (1:1), (2S)- 913980-23-1 C7H12ClN3O
Lamivudine Impurity 7 Lamivudine Impurity 7 147126-63-4 C14H24O4S
EsCitalopram EP Impurity I EsCitalopram EP Impurity I 1370643-22-3 C20H21FN2O
(trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-methoxyphenyl)-1-methylpiperidine (trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-methoxyphenyl)-1-methylpiperidine 127017-42-9 C21H25NO4
Methylprednisolone Impurity 21 Methylprednisolone Impurity 21 150899-33-5 C22H28O4
piperacillinylaMpicillin piperacillinylaMpicillin
Celecoxib iMpurity-B Celecoxib iMpurity-B
EMtricitabine iMpurity B EMtricitabine iMpurity B
(S,S)-1,7-diazatricyclo[7.3.0.07,11]dodecane-2,6,8,12-tetrone (S,S)-1,7-diazatricyclo[7.3.0.07,11]dodecane-2,6,8,12-tetrone 14842-41-2 C10H10N2O4
1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene 1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene 32820-10-3 C11H14O2
BroMhexine Hydrochloride iMpurity DN-(2-AMino-5-broMobenzyl)-N-MethylcyclohexanaMine Dihydrochloride BroMhexine Hydrochloride iMpurity DN-(2-AMino-5-broMobenzyl)-N-MethylcyclohexanaMine Dihydrochloride 132004-28-5 C14H21BrN2
2-(DiMethylcarbaMoyl)benzoic acid, 97% 2-(DiMethylcarbaMoyl)benzoic acid, 97% 20320-37-0 C10H11NO3
RAC DESMETHYL CITALOPRAM HYDROCHLORIDE RAC DESMETHYL CITALOPRAM HYDROCHLORIDE 97743-99-2 C19H19FN2O
rac-3-Oxo Atorvastatin SodiuM Salt rac-3-Oxo Atorvastatin SodiuM Salt 1391052-00-8 C33H34FN2NaO5
2-Demethoxy-4-methoxy urapidil 2-Demethoxy-4-methoxy urapidil 34661-79-5 C20H29N5O3
Ribavirin IMpurity F Ribavirin IMpurity F 58151-87-4 C10H14N4O6
4-[-((-((4-(5-(Bis(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanoyl)oxy)ethyl)(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanic Acid 4-[-((-((4-(5-(Bis(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanoyl)oxy)ethyl)(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanic Acid 1228551-91-4 C32H41Cl3N6O4
3-(6,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride 3-(6,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride 501120-42-9 C17H19ClN4O4S
(3R,4S)-rel-3-[(1,3-Benzodioxol-5-yloxy)Methyl]-4-(4'-fluoro[1,1'-biphenyl]-4-yl)-piperidine Hydrochloride (3R,4S)-rel-3-[(1,3-Benzodioxol-5-yloxy)Methyl]-4-(4'-fluoro[1,1'-biphenyl]-4-yl)-piperidine Hydrochloride 1217655-87-2 C25H25ClFNO3
(16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione (16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione 216453-74-6 C25H32O6
6(S)-Hydroperoxy Simvastatin 6(S)-Hydroperoxy Simvastatin 149949-01-9 C25H38O7
Russupteridine IV Russupteridine IV 2535-20-8 C13H18N4O6
2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one 2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one 197010-20-1 C24H29NO4
5,6-trans-Ergocalciferol 5,6-trans-Ergocalciferol 51744-66-2 C28H44O
2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one 2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one 923571-15-7 C17H15NO4
4-(2-nitrophenyl)Morpholin-3-one 4-(2-nitrophenyl)Morpholin-3-one 845729-41-1 C10H10N2O4
Irbesartan IMpurity E Irbesartan IMpurity E C25H28N6O
Epinephrine Impurity 7 Epinephrine Impurity 7 62322-82-1 C9H11NO3
(trans)-4-((2-amino-4,6-dibromobenzyl)amino)cyclohexanol (trans)-4-((2-amino-4,6-dibromobenzyl)amino)cyclohexanol C13H18Br2N2O
Fesoterodine Impurity 14 Fesoterodine Impurity 14
Dexamethasone EP impurities E Dexamethasone EP impurities E
(R)-N-((S)-2-aminobutanoyl)-3-(bromomethyl)hexanamide (R)-N-((S)-2-aminobutanoyl)-3-(bromomethyl)hexanamide C11H21BrN2O2
Empagliflozin Impurity 57（R,R） Empagliflozin Impurity 57（R,R）
Azacitidine Impurity 37 Azacitidine Impurity 37 206269-46-7 C8H12N4O5
Aripiprazole peroxide degradation Impurity (MW:303Da) Aripiprazole peroxide degradation Impurity (MW:303Da)
NA NA
2,2'-(4,10-bis((trans)-1,3,4-trihydroxybutan-2-yl)-1,4,7,10-tetraazacyclododecane-1,7-diyl)diacetic acid Gd3+ 2,2'-(4,10-bis((trans)-1,3,4-trihydroxybutan-2-yl)-1,4,7,10-tetraazacyclododecane-1,7-diyl)diacetic acid Gd3+
3-[4-(acetyloxymethyl)phenyl]-2-propenoic acid methyl ester 3-[4-(acetyloxymethyl)phenyl]-2-propenoic acid methyl ester 100688-45-7 C13H14O4
Acetaminophen Impurity 14 Acetaminophen Impurity 14 1991204-56-8 C16H18N2O2
Ketoconazole Impurity 7 Ketoconazole Impurity 7 172032-21-2 C11H12Cl2O3
Rosuvastatin Impurity 59 Rosuvastatin Impurity 59
Losartan Impurity 12 Losartan Impurity 12 727718-93-6 C22H22ClN9
benzyl (2S)-2-amino-3-(4-methanesulfonylphenyl)propanoate hydrochloride benzyl (2S)-2-amino-3-(4-methanesulfonylphenyl)propanoate hydrochloride 1865726-28-8 C17H19NO4S
Glycopyrrolate Impurity 12 Glycopyrrolate Impurity 12 857353-41-4 C13H14O3
(4S,4aR,5R,12aS)-4-(dimethylamino)-3,5,10,11,12a-pentahydroxy-6-methyl-1,12-dioxo-1,4,4a,5,12,12a-hexahydrotetracene-2-carboxamide (4S,4aR,5R,12aS)-4-(dimethylamino)-3,5,10,11,12a-pentahydroxy-6-methyl-1,12-dioxo-1,4,4a,5,12,12a-hexahydrotetracene-2-carboxamide 4660-26-8 C22H22N2O8
Regorafenib Impurity 38 Regorafenib Impurity 38
Cefazolin Impurity 28 Cefazolin Impurity 28
NA NA
Acarbose Impurity IV (JP) Acarbose Impurity IV (JP) C13H21NO7
Vonoprazan Impurity 57 Vonoprazan Impurity 57
Tafluprost Impurity 9 Tafluprost Impurity 9 2099033-66-4 C27H41NO8
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