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Impurity standards

Leading impurity characterization with expertly developed standards that strengthen quality, compliance, and analytical confidence.

Impurity Standards

3`-Amino-2`-methoxy-[1,1`-biphenyl]-3-carboxylic acid

CAT. No.E470031 CAS No.1176777-76-6 Mol. F.C14H13NO3 Mol. W.243.26 g/mol Stock Status Instock

COA MSDS

3`-Bromopropiophenone

CAT. No.B020024 CAS No.19829-31-3 Mol. F.C9H9BrO Mol. W.213.07 g/mol Stock Status Instock

COA MSDS

4'-Ethylpropiophenone

CAT. No.E280001 CAS No.27465-51-6 Mol. F.C11H14O Mol. W.162.23 g/mol Stock Status Instock

COA MSDS

4(R)-N-(2-chloroallyl)-2,3-dihydro-1H-inden-1-amine, oxalate pyrrolo(3,4-b)pyrazin-5-one

CAT. No.R130026 CAS No.NA Mol. F.C14H16ClNO4 Mol. W.297.73 g/mol Stock Status Instock

COA MSDS

4,4'-(Ethane-1,1-diyl)bis(3-methyl-1-phenyl-1H-pyrazol-5(4H)-one)

CAT. No.E220009 CAS No.82772-85-8 Mol. F.C22H22N4O2 Mol. W.374.44 g/mol Stock Status Instock

COA MSDS

4,4'-Azopyridine

CAT. No.D190009 CAS No.2632-99-7 Mol. F.C10H8N4 Mol. W.184.20 g/mol Stock Status Instock

COA MSDS

4,4-diethoxy-N-ethyl-n-methylbutan-1-amine

CAT. No.R100024 CAS No.NA Mol. F.C11H25NO2 Mol. W.203.32 g/mol Stock Status Instock

COA MSDS

4,5,6,7-Tetrahydrothieno(2,3-c)pyridine Hydrochloride

CAT. No.P100017 CAS No.28783-38-2 Mol. F.C7H10ClNS Mol. W.175.68 g/mol Stock Status Instock

COA MSDS

4,5-dichloro-3,6-dihydroxy-phthalonitrile

CAT. No.F030019 CAS No.4640-41-9 Mol. F.C8H2Cl2N2O2 Mol. W.229.02 g/mol Stock Status Instock

COA MSDS

4,6-Dimethyl-2-hydroxypyrimidine

CAT. No.A670010 CAS No.108-79-2 Mol. F.C6H8N2O Mol. W.124.14 g/mol Stock Status Instock

COA MSDS

4,7-Dichloroquinoline

CAT. No.A240002 CAS No.86-98-6 Mol. F.C9H5Cl2N Mol. W.198.00 g/mol Stock Status Instock

COA MSDS

4-((3R,5S)-5-([1,1'-biphenyl]-4-ylmethyl)-3-methyl-2-oxopyrrolidin-1-yl)-4-oxobutanoic acid

CAT. No.V020070 CAS No.2216746-87-9 Mol. F.C22H23NO4 Mol. W.365.42 g/mol Stock Status Instock

COA MSDS

4-((4-methylpiperazin-1-yl)methyl)benzoic acid Dihydrochloride

CAT. No.I020022A CAS No.106261-49-8 Mol. F.C13H20Cl2N2O2 Mol. W.307.22 g/mol Stock Status Instock

COA MSDS

4-((5,6-dimethoxy-1-oxo-1,3-dihydro-2H-inden-2-ylidene)methyl)pyridine 1-oxide

CAT. No.D040023 CAS No.896134-06-8 Mol. F.C17H15NO4 Mol. W.297.31 g/mol Stock Status Instock

COA MSDS

4-(1-(2,4-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

CAT. No.M510018 CAS No.NA Mol. F.C12H15NO3 Mol. W.221.25 g/mol Stock Status Instock

COA MSDS

4-(1-(2,5-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

CAT. No.M510019 CAS No.NA Mol. F.C17H22N2O6 Mol. W.350.37 g/mol Stock Status Instock

COA MSDS

4-(1-(2,6-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

CAT. No.M510020 CAS No.NA Mol. F.C17H22N2O6 Mol. W.350.37 g/mol Stock Status Instock

COA MSDS

4-(1-(3,4-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

CAT. No.M510021 CAS No.NA Mol. F.C17H22N2O6 Mol. W.350.37 g/mol Stock Status Instock

COA MSDS

4-(2,3-Epoxypropoxy)carbazole

CAT. No.C020004 CAS No.51997-51-4 Mol. F.C15H13NO2 Mol. W.239.27 g/mol Stock Status Instock

COA MSDS

4-(2-butyl-5-(methylsulfonamido)benzofuran-3-carbonyl)phenyl methanesulfonate

CAT. No.D060025 CAS No.1448297-16-2 Mol. F.C21H23NO7S2 Mol. W.465.54 g/mol Stock Status Instock

COA MSDS

4-(2-Dimethyl amino)ethoxy benzylamine

CAT. No.I090002 CAS No.20059-73-8 Mol. F.C11H18N2O Mol. W.194.27 g/mol Stock Status Instock

COA MSDS

4-(3,5- Dichloro-benzoylamino )-3-hydroxy-benzoic acid methyl ester

CAT. No.T3000013 CAS No.2505157-36-6 Mol. F.C15H11Cl2NO4 Mol. W.340.16 g/mol Stock Status Instock

COA MSDS

4-(3-aminophenyl)morpholin-3-one

CAT. No.R290053 CAS No.1082495-22-4 Mol. F.C10H12N2O2 Mol. W.192.21 g/mol Stock Status Instock

COA MSDS

4-(3-Chlorophenyl)-3,4-dihydro-1(2H)-naphthalenone

CAT. No.S010042 CAS No.82101-37-9 Mol. F.C16H13ClO Mol. W.256.73 g/mol Stock Status Instock

COA MSDS

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Impurity standards

Impurity Standards

3`-Amino-2`-methoxy-[1,1`-biphenyl]-3-carboxylic acid

3`-Bromopropiophenone

4'-Ethylpropiophenone

4(R)-N-(2-chloroallyl)-2,3-dihydro-1H-inden-1-amine, oxalate pyrrolo(3,4-b)pyrazin-5-one

4,4'-(Ethane-1,1-diyl)bis(3-methyl-1-phenyl-1H-pyrazol-5(4H)-one)

4,4'-Azopyridine

4,4-diethoxy-N-ethyl-n-methylbutan-1-amine

4,5,6,7-Tetrahydrothieno(2,3-c)pyridine Hydrochloride

4,5-dichloro-3,6-dihydroxy-phthalonitrile

4,6-Dimethyl-2-hydroxypyrimidine

4,7-Dichloroquinoline

4-((3R,5S)-5-([1,1'-biphenyl]-4-ylmethyl)-3-methyl-2-oxopyrrolidin-1-yl)-4-oxobutanoic acid

4-((4-methylpiperazin-1-yl)methyl)benzoic acid Dihydrochloride

4-((5,6-dimethoxy-1-oxo-1,3-dihydro-2H-inden-2-ylidene)methyl)pyridine 1-oxide

4-(1-(2,4-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

4-(1-(2,5-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

4-(1-(2,6-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

4-(1-(3,4-dimethylphenyl)ethyl)-1H-imidazole L(+)-Tartaric acid

4-(2,3-Epoxypropoxy)carbazole

4-(2-butyl-5-(methylsulfonamido)benzofuran-3-carbonyl)phenyl methanesulfonate

4-(2-Dimethyl amino)ethoxy benzylamine

4-(3,5- Dichloro-benzoylamino )-3-hydroxy-benzoic acid methyl ester

4-(3-aminophenyl)morpholin-3-one

4-(3-Chlorophenyl)-3,4-dihydro-1(2H)-naphthalenone

Product structure

Sample structure