Reference Substance

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Structure Chemical Name CAS MF
Levalbuterol Related Compound B (20 mg) (alpha-[{(1,1-Dimethylethyl)amino}methyl]-4-hydroxy-3-methyl-benzenemethanol) Levalbuterol Related Compound B (20 mg) (alpha-[{(1,1-Dimethylethyl)amino}methyl]-4-hydroxy-3-methyl-benzenemethanol) 18910-68-4 C13H21NO2
3-O-De(2,6-dideoxy-3-C-Methyl-3-O-Methyl-α-L-ribo-hexopyranosyl)-8,9,10,11-tetradehydro-9-deoxo-11,12-dideoxy-9,12-epoxy-6-O-MethylerythroMycin 3-O-De(2,6-dideoxy-3-C-Methyl-3-O-Methyl-α-L-ribo-hexopyranosyl)-8,9,10,11-tetradehydro-9-deoxo-11,12-dideoxy-9,12-epoxy-6-O-MethylerythroMycin 127157-35-1 C30H51NO8
7-(4-BroMobenzoyl)- 7-(4-BroMobenzoyl)- 241825-88-7 C15H8BrNO3
Valdecoxib IMpurity B Valdecoxib IMpurity B 1373038-60-8 C32H25N3O6S2
2-(((4-(3-methoxypropoxy)-3-methylpyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole 2-(((4-(3-methoxypropoxy)-3-methylpyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole C18H21N3O2S
bortezoMib iMpurity C bortezoMib iMpurity C
cefotaxiMe IMpurity F cefotaxiMe IMpurity F
5-ForMyl-2-Methoxy-benzenesulfonaMide 5-ForMyl-2-Methoxy-benzenesulfonaMide 105764-07-6 C8H9NO4S
3'-Desethoxy-drotaverine 3'-Desethoxy-drotaverine 85475-88-3 C22H27NO4
8-EpitacroliMus 8-EpitacroliMus 129212-35-7 C44H69NO12
Xylohexaose Xylohexaose 49694-21-5 C30H50O25
Avibactam INT 1 Avibactam INT 1 1416134-48-9 C17H24N2O7
(1S,3R,4S)-4-(2-((5-chloropyridin-
2-yl)amino)-2-oxoacetamido)-3-(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxamido)cyclohexane-1-carboxylic acid (1S,3R,4S)-4-(2-((5-chloropyridin- 2-yl)amino)-2-oxoacetamido)-3-(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxamido)cyclohexane-1-carboxylic acid 834919-19-6 C22H25ClN6O5S
Iguratimod Impurity 10 Iguratimod Impurity 10 149456-97-3 C18H20N2O6S
Valsartan Impurity 32 Valsartan Impurity 32 152708-24-2 C14H11N7
Apremilast Impurity 28 Apremilast Impurity 28 1802246-60-1 C30H27N3O9S
(2R,4R)-4-methyl-1-(((3-methylquinolin-8-yl)sulfonyl)-L-arginyl)piperidine-2-carboxylic acid (2R,4R)-4-methyl-1-(((3-methylquinolin-8-yl)sulfonyl)-L-arginyl)piperidine-2-carboxylic acid 951130-92-0 C23H32N6O5S
Minodronic Acid Impurity 2 Minodronic Acid Impurity 2 127657-45-8 C9H12N2O7P2
isopropyl ((S)-((((R)-1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)(phenoxy)phosphoryl)-D-alaninate isopropyl ((S)-((((R)-1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)(phenoxy)phosphoryl)-D-alaninate 2053424-82-9 C21H29N6O5P
Apixaban Impurity BMS-591329 Apixaban Impurity BMS-591329 2029205-64-7 C24H22ClN5O3
Dapagliflozin Impurity 21 Dapagliflozin Impurity 21
Regorafenib impurity H Regorafenib impurity H 2141961-84-2 C15H14FN3O3
Cefditoren Pivoxil Dimer Cefditoren Pivoxil Dimer
UFFLDXFQXNYZLF-BHRSBNONSA-N UFFLDXFQXNYZLF-BHRSBNONSA-N 2084828-53-3 C52H61N7O8S2
6,6′-bis(hydroxymethyl)-2,2′-bipyridine 6,6′-bis(hydroxymethyl)-2,2′-bipyridine 74065-63-7 C12H12N2O2
CHITOBIOSE DIHYDROCHLORIDE CHITOBIOSE DIHYDROCHLORIDE 577-76-4 C12H24N2O9
Rocuronium bromide Impurity 32 Rocuronium bromide Impurity 32
Seco Rapamycin Seco Rapamycin 147438-27-5 C51H79NO13
Albendazole EP Impurity J Albendazole EP Impurity J 946498-41-5 C9H7Cl2N3O2
Lapatinib 4-Fluoro Impurity Lapatinib 4-Fluoro Impurity 1026818-86-9 C29H26ClFN4O4S
Arbidol Impurity 1 Arbidol Impurity 1 1130901-04-0 C21H23BrN2O3S
Difluprednate Impurity 11 Difluprednate Impurity 11 1270039-29-6 C21H24F2O4
Ozagrel impurity D Ozagrel impurity D
Pramipexole Impurity 13 HCl Pramipexole Impurity 13 HCl
Avibactam Impurity 46 Avibactam Impurity 46 1804915-68-1 C7H10N3NaO5S
Cilastatin Impurity F Cilastatin Impurity F
Teriflunomide Impurity 1 Teriflunomide Impurity 1 1385789-70-7 C12H12N2O2
Atorvastatin Calcium Hydrate impurity 33 Atorvastatin Calcium Hydrate impurity 33 2299304-89-3 C24H44N2O7
1-cyclopropyl-8-fluoro-6-methoxy-7-((4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 1-cyclopropyl-8-fluoro-6-methoxy-7-((4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 2252446-69-6 C21H25ClFN3O4
N-DEMETHYL ERYTHROMYCIN A N-DEMETHYL ERYTHROMYCIN A 992-62-1 C36H65NO13
Ritonavir EP Impurity B(HCl) Ritonavir EP Impurity B(HCl)
Butenafine Impurity 12 Butenafine Impurity 12 759458-92-9 C13H13NO
△3-Cefoperazone △3-Cefoperazone
Peramivir Impurity 31 Peramivir Impurity 31 2758048-80-3 C15H28N2O4
(R)-2-TERT-BUTYLOXYCARBONYLAMINO-PENTANE-1,5-DIOL (R)-2-TERT-BUTYLOXYCARBONYLAMINO-PENTANE-1,5-DIOL 397246-12-7 C10H21NO4
15(R)-15-METHYL PROSTAGLANDIN F2ALPHA 15(R)-15-METHYL PROSTAGLANDIN F2ALPHA 35864-81-4 C21H36O5
BROMOCLENBUTEROL BROMOCLENBUTEROL 37153-52-9 C12H18BrClN2O
2,7,10,12-Tetraazatridecanoic acid, 4-hydroxy-12-methyl-9-(1-methylethyl)-13-[2-(1-methylethyl)-4-thiazolyl]-8,11-dioxo-3,6-bis(phenylmethyl)-, 5-thiazolylmethyl ester, (3S,4R,6R,9S)- 2,7,10,12-Tetraazatridecanoic acid, 4-hydroxy-12-methyl-9-(1-methylethyl)-13-[2-(1-methylethyl)-4-thiazolyl]-8,11-dioxo-3,6-bis(phenylmethyl)-, 5-thiazolylmethyl ester, (3S,4R,6R,9S)- 1414933-82-6 C37H48N6O5S2
1,2,4-Oxadiazole-3-carboxamide, N-(3-chloro-2-hydroxypropyl)-5-methyl- 1,2,4-Oxadiazole-3-carboxamide, N-(3-chloro-2-hydroxypropyl)-5-methyl- 110578-70-6 C7H10ClN3O3
Pentoxifylline Impurity Pentoxifylline Impurity 1243654-85-4 C13H20N4O6
1H-1,2,3-Triazole-4-methanol, 1-[(2,6-difluorophenyl)methyl]- 1H-1,2,3-Triazole-4-methanol, 1-[(2,6-difluorophenyl)methyl]- 1364193-40-7 C10H9F2N3O
(E)-5-methoxy-1-[4-(trifluoromethyl)phenyl]pentan-1-one oxime (E)-5-methoxy-1-[4-(trifluoromethyl)phenyl]pentan-1-one oxime 88699-84-7 C13H16F3NO2
Flomoxef Impurity III Flomoxef Impurity III
Ampicillin Impurity Q(EP)(a trimer )Or Impurity M n=2 Ampicillin Impurity Q(EP)(a trimer )Or Impurity M n=2
Cyclopenta[5,6]naphtho[2,1-b]pyran-7-carboxylic acid, 2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-4a,6a-dimethyl-2-oxo-, methyl ester, (4aR,4bS,6aS,7S,9aS,9bS)- Cyclopenta[5,6]naphtho[2,1-b]pyran-7-carboxylic acid, 2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-4a,6a-dimethyl-2-oxo-, methyl ester, (4aR,4bS,6aS,7S,9aS,9bS)- 153222-81-2 C20H28O4
2-(4-(2-(4-(1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropanoic acid 2-(4-(2-(4-(1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropanoic acid C24H29N3O2
Rapamycin, 32-O-demethyl- Rapamycin, 32-O-demethyl- 141392-23-6 C50H77NO13
11-monoketofusidic acid 11-monoketofusidic acid 16711-91-4 C31H46O6
(3R,5S,5'aR)-5-(3-Furyl)-3',4,5,5',5'aα,7',8',8'aα-octahydro-7'α-methylspiro[furan-3(2H),6'-[6H]naphtho[1,8-bc]furan]-2,2'(4'H)-dione (3R,5S,5'aR)-5-(3-Furyl)-3',4,5,5',5'aα,7',8',8'aα-octahydro-7'α-methylspiro[furan-3(2H),6'-[6H]naphtho[1,8-bc]furan]-2,2'(4'H)-dione 53625-15-3 C19H20O5
(+)-Bisabolangelone (+)-Bisabolangelone 30557-81-4 C15H20O3
Acotiamide Hydrochloride Acotiamide Hydrochloride 185104-11-4 C21H31ClN4O5S
(S)-N-(1-aMino-1-oxobutan-2-yl)-4-chlorobutanaMide (S)-N-(1-aMino-1-oxobutan-2-yl)-4-chlorobutanaMide 102767-31-7 C8H15ClN2O2
[3-[[[2-(DiaMinoMethyleneaMino)-4-thiazolyl]Methyl]thio]propionyl]sulfaMide Hydrochloride (FaMotidine IMpurity) [3-[[[2-(DiaMinoMethyleneaMino)-4-thiazolyl]Methyl]thio]propionyl]sulfaMide Hydrochloride (FaMotidine IMpurity) 76824-17-4 C8H15ClN6O3S3
Defluoro Aprepitant Defluoro Aprepitant 170729-76-7 C23H22F6N4O3
[3S-[2(R*),3α,8aβ]]-Hexahydro-3-Methyl-1,4-dioxo-α-(2-phenylethyl)pyrrolo[1,2-a]pyrazine-2(1H)-acetic Acid [3S-[2(R*),3α,8aβ]]-Hexahydro-3-Methyl-1,4-dioxo-α-(2-phenylethyl)pyrrolo[1,2-a]pyrazine-2(1H)-acetic Acid 115623-21-7 C18H22N2O4
N-(3,5-DiMethyltricyclo[3.3.1.13,7]dec-1-yl)glycine N-(3,5-DiMethyltricyclo[3.3.1.13,7]dec-1-yl)glycine 1340545-88-1 C14H23NO2
Tenuifoliside A Tenuifoliside A 139726-35-5 C31H38O17
Gefitinib iMpurity Gefitinib iMpurity 1608115-59-8 C22H23ClFN3O4
AMoxicillin IMpurity M AMoxicillin IMpurity M C16H19N3O5S
Apixaban IMpurity 3 Apixaban IMpurity 3 1801881-18-4 C25H25N5O4
TaMsulosin EP IMpurity A TaMsulosin EP IMpurity A 918867-88-6 C30H40N2O7S
Vildagliptin IMpurity 2 (Mixture of DiastereoMers) Vildagliptin IMpurity 2 (Mixture of DiastereoMers) 1036959-23-5 C24H33N5O3
5,5'-diMethoxycarbonyl-2,2'-bipyridine 5,5'-diMethoxycarbonyl-2,2'-bipyridine 1762-45-4 C14H12N2O4
ahu377  isomer 2 ahu377 isomer 2 761373-05-1 C24H29NO5
Forsythoside I Forsythoside I 1177581-50-8 C29H36O15
2-cyanoethyl 3-aminobut-2-enoate 2-cyanoethyl 3-aminobut-2-enoate 193539-61-6 C7H10N2O2
LCZ 696  Impurity B LCZ 696 Impurity B 766480-48-2 C24H29NO5
LCZ 696 Impurity C LCZ 696 Impurity C 149709-63-7 C24H29NO5
4,4'-Bis-Dimethylsilyl-Biphenyl 4,4'-Bis-Dimethylsilyl-Biphenyl 17937-85-8 C16H22Si2
Canagliflozin α Isomer Canagliflozin α Isomer 1589590-87-3 C24H25FO5S
2-(3-cyano-4-propoxyphenyl)-4-methylthiazole-5-carboxylic acid 2-(3-cyano-4-propoxyphenyl)-4-methylthiazole-5-carboxylic acid 1530308-87-2 C15H14N2O3S
4-bromo-1-chloro-2-(2-ethoxybenzyl)benzene 4-bromo-1-chloro-2-(2-ethoxybenzyl)benzene 1830346-16-1 C15H14BrClO
Clopidogrel EP Impurity B HCl Clopidogrel EP Impurity B HCl 1396607-35-4 C16H17Cl2NO2S
Saikosaponin B3 Saikosaponin B3 58316-42-0 C43H72O14
diethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate diethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate 21829-26-5 C19H22N2O6
ROC-325 ROC-325 1859141-26-6 C28H27ClN4OS
Argatroban Impurity 26 Argatroban Impurity 26 189264-02-6 C23H36N6O5S
LPC(15:0) LPC(15:0) 1357147-16-0 C23H48NO7P
Pitavastatin Impurity 2 Pitavastatin Impurity 2 1187966-93-3 C25H22FNO4
Apixaban Dehydro Impurity Apixaban Dehydro Impurity 1074549-89-5 C25H23N5O4
9-CIS-RETINOIC ACID 9-CIS-RETINOIC ACID 5300-03-8 C20H28O2
Ozagrel Impurity 7 Ozagrel Impurity 7 883903-91-1 C23H21N2NaO4
N-Des acetyl impurity N-Des acetyl impurity
ALPHA-(-)-THUJONE ALPHA-(-)-THUJONE 546-80-5 C10H16O
Peramivir Impurity 6 Peramivir Impurity 6 2124296-37-1 C15H28N4O4
BRD0705 BRD0705 2056261-41-5 C20H23N3O
Rasagiline Impurity 2 Rasagiline Impurity 2 200628-33-7 C16H18ClN
Bortezomib Impurity WQ Bortezomib Impurity WQ
6-alfa-Hydroxy Mometasone Furoate 6-alfa-Hydroxy Mometasone Furoate 134429-33-7 C27H30Cl2O7
Cefdinir Impurity Cefdinir Impurity
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