Impurity Reference Standards
API Impurities
Process impurities, isomers, degradants and related compounds for thousands of APIs, characterised for method development, validation and QC release.
(4-Chlorophenyl)[4-(1-methylethoxy)phenyl]methanone
- CAS
- 154356-96-4
- Formula
- C16H15ClO2
- MW
- 274.74 g/mol
ZX-021667
(4-Cyclopentyl-3-(trifluoromethyl)phenyl)methanol
- CAS
- 957205-39-9
- Formula
- C13H15F3O
- MW
- 244.25 g/mol
ZX-029402
(4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one)
- CAS
- 50650-75-4
- Formula
- C14H22O2
- MW
- 222.32 g/mol
ZX-035998
(4AR,4bS,6aS,7S,9aS,9bS,11aS)-4a,6a-Dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]quinoline-7-carboxylic acid
- CAS
- 1430804-94-6
- Formula
- C19H29NO3
- MW
- 319.4 g/mol
ZX-029130
(4AR,4bS,6aS,7S,9aS,9bS)-N-(1,1-Dimethylethyl)-2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-4a,6a-dimethyl-2-oxo-1H-indeno[5,4-f]quinoline-7-carboxamide
- CAS
- 166896-74-8
- Formula
- C23H36N2O2
- MW
- 372.5 g/mol
ZX-029504
(4AS,7aR)-tert-butyl hexahydropyrrolo[3,4-b][1,4]oxazine-6(2H)-carboxylate
- CAS
- 138027-02-8
- Formula
- C11H20N2O3
- MW
- 228.29 g/mol
ZX-045733
(4AS,7aS)-Octahydro-1-methyl-1H-pyrrolo[3,4-b]pyridine
- CAS
- 151213-45-5
- Formula
- C8H16N2
- MW
- 140.23 g/mol
ZX-025714
(4R,12AR)-7-Methoxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic acid
- CAS
- 2315439-81-5
- Formula
- C14H16N2O6
- MW
- 308.29 g/mol
ZX-029055
(4R,4AS,7aR,12bS)-3-(Cyclopropylmethyl)-4a,9-dihydroxy-2,3,4,4a-tetrahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7(7aH)-one
- CAS
- 123086-68-0
- Formula
- C20H21NO4
- MW
- 339.4 g/mol
ZX-025759
(4R,5R)-3-Benzoyl-2-(4-anisyl)-4-phenyl-5-oxazolidinecarboxylic acid
- CAS
- 1262147-55-6
- Formula
- C24H21NO5
- MW
- 403.4 g/mol
ZX-023703
(4R,6R)-4-(Ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide hydrochloride
- CAS
- 120279-36-9
- Formula
- C10H17ClN2O4S3
- MW
- 360.9 g/mol
ZX-044838
(4R,6R)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid 1,1-Dimethylethyl Ester
- CAS
- 125971-94-0
- Formula
- C14H23NO4
- MW
- 269.34 g/mol
ZX-020711
(4R,6S)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester
- CAS
- 196085-84-4
- Formula
- C14H23NO4
- MW
- 269.34 g/mol
ZX-019917
(4R)-2-Oxo-4-propyltetrahydrofuran-3-carboxylic acid
- CAS
- 2052297-76-2
- Formula
- C8H12O4
- MW
- 172.18 g/mol
ZX-028345
(4S,12AS)-7-Methoxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic Acid
- CAS
- 2730133-58-9
- Formula
- C14H16N2O6
- MW
- 308.29 g/mol
ZX-029056
(4S,4AS,5aR,12aS)-12-Amino-4,7-bis(dimethylamino)-3,10,12a-trihydroxy-9-((neopentylamino)methyl)-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide
- CAS
- 2272886-39-0
- Formula
- C29H41N5O6
- MW
- 555.7 g/mol
ZX-030946
(4S,4AS,5aR,12aS)-4,7-Bis(dimethylamino)-3,10,12,12a-tetrahydroxy-9-((1-neopentylureido)methyl)-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide
- CAS
- 2272886-37-8
- Formula
- C30H41N5O8
- MW
- 599.7 g/mol
ZX-030943
(4S,4AS,5aR,12aS)-4,7-Bis(dimethylamino)-3,10,12,12a-tetrahydroxy-9-((methyl(neopentyl)amino)methyl)-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide
- CAS
- 488819-64-3
- Formula
- C30H42N4O7
- MW
- 570.7 g/mol
ZX-025932
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