Reference Substance

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Structure Chemical Name CAS MF
Albuterol diMer Albuterol diMer 147663-30-7 C26H40N2O5
Carbamic acid, N-[3-fluoro-4-(4-morpholinyl)phenyl]-, 1,1-dimethylethyl ester Carbamic acid, N-[3-fluoro-4-(4-morpholinyl)phenyl]-, 1,1-dimethylethyl ester 952680-48-7 C15H21FN2O3
edaravone iMpurity A edaravone iMpurity A
DEXTROMETHORPHAN IMPURITY A DEXTROMETHORPHAN IMPURITY A 58496-77-8 C17H24BrNO
Anisamide, 3-ethoxy- Anisamide, 3-ethoxy- 247569-89-7 C10H13NO3
ent-Aprepitant ent-Aprepitant 172822-29-6 C23H21F7N4O3
AmBroxol Impurity 11 AmBroxol Impurity 11 2088879-81-4 C14H16Br2N2O
Cephalexin IMpurity C Cephalexin IMpurity C C16H17N3O4S
(3R,8S,9S,12S) Atazanavir (3R,8S,9S,12S) Atazanavir 1332981-14-2 C38H52N6O7
6-Des(1-Methyl-2-benziMidazolyl)-6-carboxy TelMisartan 6-Des(1-Methyl-2-benziMidazolyl)-6-carboxy TelMisartan 884330-12-5 C26H24N2O4
Flurbiprofen Impurity 6 Flurbiprofen Impurity 6 124635-86-5 C18H19FO4
Tedizolid Impurity 34 Tedizolid Impurity 34 2095200-69-2 C16H18FN6O5P
Cephalexin Diketopiperazine Monoacid (Mixture of DiastereoMers) Cephalexin Diketopiperazine Monoacid (Mixture of DiastereoMers) 1323247-65-9 C16H19N3O5S
Ipratropium Bromide EP Impurity F Bromide Ipratropium Bromide EP Impurity F Bromide 60018-35-1 C20H28BrNO2
Iohexol EP Impurity F Iohexol EP Impurity F 1215856-35-1 C14H19I2N3O6
Apixaban IMpurity 2 Apixaban IMpurity 2 1801881-16-2 C25H25N5O4
3'-Demethyl-12-deoxyerythromycin 3'-Demethyl-12-deoxyerythromycin 33442-56-7 C36H65NO12
Pantoprazole EP IMpurity E Pantoprazole EP IMpurity E 2115779-15-0 C32H28F4N6O8S2
Clotrimazole EP Impurity G Clotrimazole EP Impurity G 289887-34-9 C23H19ClN2
(R)-(4-(5-chlorobenzo[d]oxazol-2-yl)-7-Methyl-1,4-diazepan-1-yl)(5-Methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)Methanone (R)-(4-(5-chlorobenzo[d]oxazol-2-yl)-7-Methyl-1,4-diazepan-1-yl)(5-Methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)Methanone 1030377-80-0 C23H23ClN6O2
Pramipexole Impurity Z Pramipexole Impurity Z
Dabigatran iMpurity J Dabigatran iMpurity J 211915-00-3 C33H39N7O5
5-Desthiolyl-5-thioxo Cefoperazone 5-Desthiolyl-5-thioxo Cefoperazone 711598-76-4 C25H27N9O8S2
Imipenem Impurity Imipenem Impurity 776257-75-1 C24H34N6O8S2
N-DesaMinosulfonyl-N-cyano FaMotidine N-DesaMinosulfonyl-N-cyano FaMotidine 76823-97-7 C9H13N7S2
Toluene-4-sulfonic acid 5-(2,4-difluoro-phenyl)-5-[1,2,4]triazol-1-ylMethyl-tetrahydro-furan-3-ylMethyl Toluene-4-sulfonic acid 5-(2,4-difluoro-phenyl)-5-[1,2,4]triazol-1-ylMethyl-tetrahydro-furan-3-ylMethyl 159811-30-0 C21H21F2N3O4S
1,2-Dithiolane-3-pentanoic acid 1-oxide 1,2-Dithiolane-3-pentanoic acid 1-oxide 6992-30-9 C8H14O3S2
Azilsartan iMpurity A Azilsartan iMpurity A 147404-76-0 C25H23N3O4
4-(3,4-Dihydro-4,4-dimethyl-7-pentylfuro[4,3,2-de][1]benzopyran-3-yl)-2-butanone 4-(3,4-Dihydro-4,4-dimethyl-7-pentylfuro[4,3,2-de][1]benzopyran-3-yl)-2-butanone 70474-97-4
BUTYL ANALOG OF TAXOL, n-(RG) BUTYL ANALOG OF TAXOL, n-(RG) 173101-55-8 C45H55NO14
Ampicillin oxidation impurities Ampicillin oxidation impurities
Anhydrosafflor yellow B Anhydrosafflor yellow B 184840-84-4 C48H52O26
Micafungin FR-179642 impurity (acid) Micafungin FR-179642 impurity (acid) 168110-44-9 C35H52N8O20S
Cefotiam Impurity 1 Cefotiam Impurity 1 775233-43-7 C13H14N4O5S2
Clarithromycin Impurity H Clarithromycin Impurity H 127140-69-6 C38H67NO14
Cilastatin Impurity A Cilastatin Impurity A
Levosimendan Impurity 4 Levosimendan Impurity 4 131741-37-2 C14 H14 N6 O2
Paroxetine Related Impurity 9 Paroxetine Related Impurity 9 253768-88-6 C26H24FNO5
Pentoxifylline Impurity I Pentoxifylline Impurity I 55247-90-0 C14H14N4O2
Fludarabine Phosphate EP Impurity C Fludarabine Phosphate EP Impurity C 548774-53-4 C10H14FN5O10P2
(R)-AMbrisentan (R)-AMbrisentan 1007358-76-0 C22H22N2O4
LincoMycin 2-Phosphate LincoMycin 2-Phosphate 27480-30-4 C18H35N2O9PS
3-O-Methylcarbidopa 3-O-Methylcarbidopa 85933-19-3 C11H16N2O4
DL-β-O-Methylnorepinephrine Hydrochloride DL-β-O-Methylnorepinephrine Hydrochloride 3770-01-2 C9H14ClNO3
N-[2-[(Methylamino)carbonyl]benzoyl] N-[2-[(Methylamino)carbonyl]benzoyl] 721958-72-1 C29H32ClN3O7
Lidocaine IMpurity E Lidocaine IMpurity E 745798-07-6 C20H25N3O2
2-[4-(4-METHOXY-PHENOXY)-PHENYL]-MALONIC ACID MONO-(4-METHOXY-PHENYL) ESTER 2-[4-(4-METHOXY-PHENOXY)-PHENYL]-MALONIC ACID MONO-(4-METHOXY-PHENYL) ESTER 70175-90-5 C25H24O7
2-Des(acetylthioMethyl)-2-Methylene Racecadotril 2-Des(acetylthioMethyl)-2-Methylene Racecadotril 87428-99-7 C19H19NO3
7(4H)-Benzothiazolone, 2-amino-5,6-dihydro-6-(propylamino)-, (6S)- 7(4H)-Benzothiazolone, 2-amino-5,6-dihydro-6-(propylamino)-, (6S)- 2204518-89-6 C10H15N3OS
Dehydro Simvastatin Dehydro Simvastatin 210980-68-0 C25H36O4
Metaraminol Bitartrate Impurity 3 Metaraminol Bitartrate Impurity 3 21480-43-3 C9H13NO2
Azlocillin Oxide Impurity Azlocillin Oxide Impurity
2-Pentyn-1-ol 2-Pentyn-1-ol 6261-22-9 C5H8O
Axitinib Impurity C Axitinib Impurity C
2-(tert-butylamino)-1-(4-hydroxy-3-methylphenyl)ethan-1-one 2-(tert-butylamino)-1-(4-hydroxy-3-methylphenyl)ethan-1-one 60853-66-9 C13H19NO2
AMlodipine iMpurity AMlodipine iMpurity C26H31ClN2O8S
Ceftaroline Fosamil Impurity 8 Ceftaroline Fosamil Impurity 8 1286218-63-0 C22H23N8O9PS4
ent-Tadalafil ent-Tadalafil 629652-72-8 C22H19N3O4
Posaconazole Impurity 36 Posaconazole Impurity 36 2243786-02-7 C30H35N5O3
4-Methyl-N-(3-(5-Methyl-1H-iMidazol-1-yl)-5-(trifluoroMethyl)phenyl)-3-((4-(pyridin-3-yl)pyriMidin-2-yl)aMino)benzaMide 4-Methyl-N-(3-(5-Methyl-1H-iMidazol-1-yl)-5-(trifluoroMethyl)phenyl)-3-((4-(pyridin-3-yl)pyriMidin-2-yl)aMino)benzaMide 641571-15-5 C28H22F3N7O
Dapagliflozin Impurity 9 Dapagliflozin Impurity 9 2305949-36-2 C15H14ClIO
JYMSVNHODSJOPS-UHFFFAOYSA-N JYMSVNHODSJOPS-UHFFFAOYSA-N 46053-56-9 C8H10N2O2
Lenalidomide Impurity 11 Lenalidomide Impurity 11 48103-74-8 C5H7NO3
Pentoxifylline Impurity I Pentoxifylline Impurity I 55247-90-0 C14H14N4O2
Fluvoxamine EP Impurity B Maleate Fluvoxamine EP Impurity B Maleate 89035-92-7 C15H21F3N2O2
Pregabalin EP Impurity A Pregabalin EP Impurity A 181289-23-6 C8H15NO
((2R,3S,4R,5R,6S)-6-(4-chloro-3-(4-((S)-tetrahydrofuran-3-yloxy)benzyl)phenyl)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)Methyl acetate ((2R,3S,4R,5R,6S)-6-(4-chloro-3-(4-((S)-tetrahydrofuran-3-yloxy)benzyl)phenyl)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)Methyl acetate 864070-37-1 C19H21ClO6
C-DeMethyl ClethodiM C-DeMethyl ClethodiM 112301-96-9 C16H24ClNO3S
Dapoxetine-004 Dapoxetine-004 2245197-07-1 C30H31NO
Cefotiam Impurity 2 Cefotiam Impurity 2 1566599-01-6 C13H12N4O4S2
Isavuconazole Impurity Isavuconazole Impurity 21661-87-0 C9H5Br2NO
(4S,5S)-4-Benzyl-5-[(2S)-2-((4S)-4-isopropyl-2,5-dioxoiMidazolidin-1-yl)-3-phenylpropyl]-2-oxo-1,3-oxazolidine-3-carboxylate thiazol-5-ylMethyl Ester (4S,5S)-4-Benzyl-5-[(2S)-2-((4S)-4-isopropyl-2,5-dioxoiMidazolidin-1-yl)-3-phenylpropyl]-2-oxo-1,3-oxazolidine-3-carboxylate thiazol-5-ylMethyl Ester 1010809-43-4 C30H32N4O6S
Parecoxib Impurity 4 Parecoxib Impurity 4 57736-10-4 C14H13NO
1,2-Bis(piperazin-1-yl)benzene 1,2-Bis(piperazin-1-yl)benzene 1446750-99-7 C14H22N4
3-Thiomorpholinecarboxylic acid, 5-oxo-, 1-oxide 3-Thiomorpholinecarboxylic acid, 5-oxo-, 1-oxide 88620-38-6 C5H7NO4S
2-AMino-3-(4-broMobenzoyl)phenyloxoacetic Acid 2-AMino-3-(4-broMobenzoyl)phenyloxoacetic Acid 1391052-54-2 C15H10BrNO4
Milrinone Impurity A Milrinone Impurity A
Ivabradine IMpurity Ivabradine IMpurity 1616710-50-9 C27H35ClN2O6
Famotidine EP Impurity H Famotidine EP Impurity H 106649-96-1 C6H10N6S2
Finasteride IMpurity C Finasteride IMpurity C 1329611-51-9 C23H34N2O2
Icariside I Icariside I 56725-99-6 C27H30O11
Posacozole Related Compound 2 Posacozole Related Compound 2 165115-70-8 C11H10F2O2
(4S)-2-(((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)(carboxy)-methyl)-5,5-dimethylthiazolidine-4 (4S)-2-(((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)(carboxy)-methyl)-5,5-dimethylthiazolidine-4 42947-63-7 C16H21N3O6S
(3R,4R)-3-[(6-amino-4-pyrimidinyl)methylamino]-4-methyl-β-oxo-1-Piperidinepropanenitrile (3R,4R)-3-[(6-amino-4-pyrimidinyl)methylamino]-4-methyl-β-oxo-1-Piperidinepropanenitrile 1640971-60-3 C14H20N6O
Buspirone EP Impurity C Buspirone EP Impurity C 257877-45-5 C20H30N8
6.7-dihydrothieno[3.2.c]pyridin-4(5H)-one 6.7-dihydrothieno[3.2.c]pyridin-4(5H)-one 68559-60-4 C7H7NOS
N-(3-(2-(2-chloropyriMidin-4-yl)acetyl)-2-fluorophenyl)-2,6-difluorobenzenesulfonaMide N-(3-(2-(2-chloropyriMidin-4-yl)acetyl)-2-fluorophenyl)-2,6-difluorobenzenesulfonaMide 1195768-20-7 C18H11ClF3N3O3S
Clindamycin 3-Phosphate Clindamycin 3-Phosphate 28708-34-1 C18H34ClN2O8PS
Sitagliptin EP Impurity C Sitagliptin EP Impurity C 945261-48-3 C16H16F5N5O
IMidazo[1,2-a]pyridin-6-aMine, 3-chloro- IMidazo[1,2-a]pyridin-6-aMine, 3-chloro- 1094463-26-9 C7H6ClN3
(3aR,4S,7R,7aS)-2-(((1S,2S)-2-((4-(benzo[d]isothiazol-3-yl)piperazin-1-yl)methyl)cyclohexyl)methyl)hexahydro-1H-4,7-methanoisoindole-1,3(2H)-dione (3aR,4S,7R,7aS)-2-(((1S,2S)-2-((4-(benzo[d]isothiazol-3-yl)piperazin-1-yl)methyl)cyclohexyl)methyl)hexahydro-1H-4,7-methanoisoindole-1,3(2H)-dione 1448443-35-3 C28H36N4O2S
Amoxicillin EP Impurity L Amoxicillin EP Impurity L 1789703-32-7 C24H29N5O7S2
Amlodipine Diethyl Ester Amlodipine Diethyl Ester 140171-65-9 C21H27ClN2O5
1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanol 1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanol 2055542-18-0 C12H18O5S
21-Hydroxy-16α-methylpregna-1,4,9(11)-triene-3,20-dione 21-Hydroxy-16α-methylpregna-1,4,9(11)-triene-3,20-dione 56016-90-1 C22H28O3
Mono-POC Isopropyl Tenofovir Mono-POC Isopropyl Tenofovir 1422284-15-8 C21H32N5O11P
Avatrombopag Impurity 22 Avatrombopag Impurity 22 570403-14-4 C31H38Cl2N6O3S2
N-Desmethyl O-Methyl Clobazam N-Desmethyl O-Methyl Clobazam 2009208-96-0 C16H15ClN2O3
Dexmedetomidine-004 Dexmedetomidine-004 2240179-62-6 C13H16N2
Posaconazole Impurity 43 Posaconazole Impurity 43 357189-95-8 C37H40F2N8O6
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