Reference Substance

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Structure Chemical Name CAS MF
Dabigatran iMpurity J Dabigatran iMpurity J 211915-00-3 C33H39N7O5
Milnacipran Related Impurity 3 Milnacipran Related Impurity 3 19532-98-0 C10H12N2O2
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
1,1′-Trimethylenedi-theobromine 1,1′-Trimethylenedi-theobromine 74857-22-0 C17H20N8O4
(R)-(-)-MUSCONE (R)-(-)-MUSCONE 10403-00-6 C16H30O
Atazanavir EP Impurity G Atazanavir EP Impurity G 1332981-16-4 C38H52N6O7
LincoMycin 2-Phosphate LincoMycin 2-Phosphate 27480-30-4 C18H35N2O9PS
6α-Hydroxy Norgestrel 6α-Hydroxy Norgestrel 87585-03-3 C21H28O3
Ceftaroline Fosamil Impurity 8 Ceftaroline Fosamil Impurity 8 1286218-63-0 C22H23N8O9PS4
Cyclophosphamide Related Compound D (25 mg) (3-[2-(2-chloroethylamino)ethylamino]propyl dihydrogen phosphate dihydrochloride) Cyclophosphamide Related Compound D (25 mg) (3-[2-(2-chloroethylamino)ethylamino]propyl dihydrogen phosphate dihydrochloride) 158401-51-5 C7H19Cl2N2O4P
Cefotiam Impurity 1 Cefotiam Impurity 1 775233-43-7 C13H14N4O5S2
2-Des(acetylthioMethyl)-2-Methylene Racecadotril 2-Des(acetylthioMethyl)-2-Methylene Racecadotril 87428-99-7 C19H19NO3
Dabigatran iMpurity K Dabigatran iMpurity K 2225986-95-6 C34H41N7O5
Dapoxetine-004 Dapoxetine-004 2245197-07-1 C30H31NO
AmBroxol Impurity 11 AmBroxol Impurity 11 2088879-81-4 C14H16Br2N2O
Lidocaine IMpurity E Lidocaine IMpurity E 745798-07-6 C20H25N3O2
N,5-bis(4-chlorophenyl)-3-iMino-3,5-dihydrophenazin-2-aMine N,5-bis(4-chlorophenyl)-3-iMino-3,5-dihydrophenazin-2-aMine 102262-55-5 C24H16Cl2N4
N-Desbutyl-N-propyl BuMetanide N-Desbutyl-N-propyl BuMetanide 28395-28-0 C16H18N2O5S
Imipenem Impurity Imipenem Impurity 776257-75-1 C24H34N6O8S2
(1S,2S,3S,4R)-Methyl 3-((R)-1-aMino-2-ethylbutyl)-4-(tert-butoxycarbonylaMino)-2-hydroxycyclopentanecarboxylate (1S,2S,3S,4R)-Methyl 3-((R)-1-aMino-2-ethylbutyl)-4-(tert-butoxycarbonylaMino)-2-hydroxycyclopentanecarboxylate 316173-29-2 C18H34N2O5
(3R,8S,9S,12S) Atazanavir (3R,8S,9S,12S) Atazanavir 1332981-14-2 C38H52N6O7
Cephalexin Diketopiperazine Monoacid (Mixture of DiastereoMers) Cephalexin Diketopiperazine Monoacid (Mixture of DiastereoMers) 1323247-65-9 C16H19N3O5S
Teriflunomide Impurity 2 Teriflunomide Impurity 2 220512-86-7 C12H9F3N2O2
3-Isobutylglutarimid 3-Isobutylglutarimid 916982-10-0 C9H15NO2
Olaparib Impurity G Olaparib Impurity G
((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
EsoMeprazole related substance H431/41 EsoMeprazole related substance H431/41 1227380-90-6 C16H15N3O4
3-Thiomorpholinecarboxylic acid, 5-oxo-, 1-oxide 3-Thiomorpholinecarboxylic acid, 5-oxo-, 1-oxide 88620-38-6 C5H7NO4S
Avatrombopag Impurity 22 Avatrombopag Impurity 22 570403-14-4 C31H38Cl2N6O3S2
Paroxetine Related Impurity 9 Paroxetine Related Impurity 9 253768-88-6 C26H24FNO5
Azilsartan iMpurity A Azilsartan iMpurity A 147404-76-0 C25H23N3O4
RebaMipide iMpurity 1 RebaMipide iMpurity 1 100342-53-8 C18H15ClN2O2
9β,10α-Pregna-4,6,8(14)-triene-3,20-dione 9β,10α-Pregna-4,6,8(14)-triene-3,20-dione 23035-53-2 C21H26O2
(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
AMpicillin EP IMpurity C AMpicillin EP IMpurity C 49841-96-5 C16H19N3O4S
Anhydrosafflor yellow B Anhydrosafflor yellow B 184840-84-4 C48H52O26
Albuterol diMer Albuterol diMer 147663-30-7 C26H40N2O5
Cilastatin EP Impurity A Cilastatin EP Impurity A
Pantoprazole EP IMpurity E Pantoprazole EP IMpurity E 2115779-15-0 C32H28F4N6O8S2
RebaMipide 3-Chloro IMpurity RebaMipide 3-Chloro IMpurity 90098-05-8 C19H15ClN2O4
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
Methotrexate γ-Methyl Ester Methotrexate γ-Methyl Ester 67022-39-3 C21H24N8O5
Apixaban IMpurity 2 Apixaban IMpurity 2 1801881-16-2 C25H25N5O4
7-Chlorobenzo[b]thiophene-3-Methanol 7-Chlorobenzo[b]thiophene-3-Methanol 142181-53-1 C9H7ClOS
N-Methyl-5-methylamino-1H-imidazole-4-carboxamide N-Methyl-5-methylamino-1H-imidazole-4-carboxamide 6736-40-9 C6H10N4O
Salbutamol EP Impurity D Salbutamol EP Impurity D C13H21NO3
DL-β-O-Methylnorepinephrine Hydrochloride DL-β-O-Methylnorepinephrine Hydrochloride 3770-01-2 C9H14ClNO3
Amoxicillin Related Compound D (50 mg) ((4S)-2-{[(R)-2-amino-2-(4-hydroxyphenyl)acetamido](carboxy)methyl}-5,5-dimethylthiazolidine-4-carboxylic acid, monosodium salt) Amoxicillin Related Compound D (50 mg) ((4S)-2-{[(R)-2-amino-2-(4-hydroxyphenyl)acetamido](carboxy)methyl}-5,5-dimethylthiazolidine-4-carboxylic acid, monosodium salt) 68728-47-2 C16H20N3NaO6S
Anisamide, 3-ethoxy- Anisamide, 3-ethoxy- 247569-89-7 C10H13NO3
Metaraminol Bitartrate Impurity 3 Metaraminol Bitartrate Impurity 3 21480-43-3 C9H13NO2
Lenalidomide Impurity 11 Lenalidomide Impurity 11 48103-74-8 C5H7NO3
Ampicillin oxidation impurities Ampicillin oxidation impurities
Rufinamide 2,6-Didesfluoro Impurity Rufinamide 2,6-Didesfluoro Impurity 80819-65-4 C10H10N4O
Icariside I Icariside I 56725-99-6 C27H30O11
Cefixime impurity 13/Cefixime TBE impurity A/Cefixime tert-Butyl Ester/(6R,7R)-7-((Z)-2-(2-aminothiazol-4-yl)-2-((2-(tert-butoxy)-2-oxoethoxy)imino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Cefixime impurity 13/Cefixime TBE impurity A/Cefixime tert-Butyl Ester/(6R,7R)-7-((Z)-2-(2-aminothiazol-4-yl)-2-((2-(tert-butoxy)-2-oxoethoxy)imino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 79368-92-6 C20H23N5O7S2
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
Erlotinib Impurity 48 Erlotinib Impurity 48 2304005-44-3 C8H8BrN
Amlodipine Diethyl Ester Amlodipine Diethyl Ester 140171-65-9 C21H27ClN2O5
Febuxostat Impurity 32 HCl Febuxostat Impurity 32 HCl 1267681-15-1 C12H11NO3S
Dapagliflozin Impurity 9 Dapagliflozin Impurity 9 2305949-36-2 C15H14ClIO
Milrinone Impurity A Milrinone Impurity A
FaMotidine Acid IMpurity FaMotidine Acid IMpurity 107880-74-0 C8H12N4O2S2
Buspirone EP Impurity C Buspirone EP Impurity C 257877-45-5 C20H30N8
N-(3,4-diMethoxyphenethyl)-4-(4-Methoxyphenyl)butan-2-aMine N-(3,4-diMethoxyphenethyl)-4-(4-Methoxyphenyl)butan-2-aMine 61413-44-3 C21H29NO3
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
Dehydro Simvastatin Dehydro Simvastatin 210980-68-0 C25H36O4
Cilastatin Impurity C Cilastatin Impurity C
BUTYL ANALOG OF TAXOL, n-(RG) BUTYL ANALOG OF TAXOL, n-(RG) 173101-55-8 C45H55NO14
Solifenacin IMpurity Solifenacin IMpurity 1956436-64-8 C23H26N2O3
Dehydroxy Bisoprolol Dehydroxy Bisoprolol 1217245-60-7 C18H29NO3
Brivaracetam Impurity B Brivaracetam Impurity B 943986-67-2 C11H19NO3
Isavuconazole Impurity Isavuconazole Impurity 21661-87-0 C9H5Br2NO
Ipratropium Bromide EP Impurity F Bromide Ipratropium Bromide EP Impurity F Bromide 60018-35-1 C20H28BrNO2
2-Pentyn-1-ol 2-Pentyn-1-ol 6261-22-9 C5H8O
Dexmedetomidine-004 Dexmedetomidine-004 2240179-62-6 C13H16N2
Famotidine EP Impurity H Famotidine EP Impurity H 106649-96-1 C6H10N6S2
Flurbiprofen Impurity 6 Flurbiprofen Impurity 6 124635-86-5 C18H19FO4
Fludarabine Phosphate EP Impurity C Fludarabine Phosphate EP Impurity C 548774-53-4 C10H14FN5O10P2
Pramipexole Impurity Z Pramipexole Impurity Z
(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
3-Quinolinecarboxylic acid, 7-aMino-1-cyclopropyl-6-fluoro-1,4-dihydro-8-Methoxy-4-oxo- 3-Quinolinecarboxylic acid, 7-aMino-1-cyclopropyl-6-fluoro-1,4-dihydro-8-Methoxy-4-oxo- 172426-88-9 C14H13FN2O4
Sitagliptin EP Impurity C Sitagliptin EP Impurity C 945261-48-3 C16H16F5N5O
Clotrimazole EP Impurity G Clotrimazole EP Impurity G 289887-34-9 C23H19ClN2
Posaconazole Succinyl Ester Posaconazole Succinyl Ester 1488301-79-6 C41H46F2N8O7
DEXTROMETHORPHAN IMPURITY A DEXTROMETHORPHAN IMPURITY A 58496-77-8 C17H24BrNO
LUCIDIN LUCIDIN 478-08-0 C15H10O5
Posacozole Related Compound 2 Posacozole Related Compound 2 165115-70-8 C11H10F2O2
Pitavastatin Impurity 10 Pitavastatin Impurity 10
Mono-POC Isopropyl Tenofovir Mono-POC Isopropyl Tenofovir 1422284-15-8 C21H32N5O11P
Mometasone Furoate EP Impurity S Mometasone Furoate EP Impurity S 2231764-75-1 C27H30Cl2O6
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
Fluvoxamine EP Impurity B Maleate Fluvoxamine EP Impurity B Maleate 89035-92-7 C15H21F3N2O2
1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanol 1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanol 2055542-18-0 C12H18O5S
Posaconazole Impurity 36 Posaconazole Impurity 36 2243786-02-7 C30H35N5O3
Cilastatin Impurity A Cilastatin Impurity A
Parecoxib Impurity 4 Parecoxib Impurity 4 57736-10-4 C14H13NO
(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
Paroxetine Impurity 10(Paroxetine HCl Hemihydrate EP Impurity E) Paroxetine Impurity 10(Paroxetine HCl Hemihydrate EP Impurity E)
edaravone iMpurity A edaravone iMpurity A
Dabigatran Etexilate iMpurity H Dabigatran Etexilate iMpurity H 1702936-92-2 C19H20N4O3
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