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Categories / Impurity

Impurity Products

Browse available compounds, catalogue references, CAS numbers and technical details from Clearsynth.

Showing 6265-6288 of 27558 products
All In Stock Custom Synthesis
(4R)-4-[2-(1,1-Dimethylethoxy)-2-oxoethoxy]-L-proline chemical structure
Custom Synthesis

(4R)-4-[2-(1,1-Dimethylethoxy)-2-oxoethoxy]-L-proline

CAT No. CS-O-58110
CAS No. 2173568-86-8
Category Impurity
Parent API Cefalotin
Formula C11H19NO5
Mol. Wt. 245.27
(4R)-4-propylpyrrolidin-2-one chemical structure
Custom Synthesis

(4R)-4-propylpyrrolidin-2-one

CAT No. CS-DV-00210
CAS No. 930123-37-8
Category Impurity
Parent API
Formula -
Mol. Wt.
(4R)-dihydrospectinomycin chemical structure
Custom Synthesis

(4R)-dihydrospectinomycin

CAT No. CS-O-57315
CAS No. 28048-39-7
Category Impurity
Parent API spectinomycin
Formula C14H26N2O7
Mol. Wt. 334.37
(4R)-Etapenem Open-ring methyl ester chemical structure
Custom Synthesis

(4R)-Etapenem Open-ring methyl ester

CAT No. CS-O-48683
CAS No. -
Category Impurity
Parent API Ertapenem
Formula C23H29N3O8S
Mol. Wt. 507.56
(4R)-ethyl 2-oxo-4-propyltetrahydrofuran-3-carboxylate chemical structure
Custom Synthesis

(4R)-ethyl 2-oxo-4-propyltetrahydrofuran-3-carboxylate

CAT No. CS-O-44266
CAS No. 2052297-73-9
Category Impurity
Parent API Saxagliptin
Formula C10H16O4
Mol. Wt. 200.23
(4R)-Methyl 4-((3R,5R,6S,10R,13R,17R)-3,6-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phen chemical structure
Custom Synthesis

(4R)-Methyl 4-((3R,5R,6S,10R,13R,17R)-3,6-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phen

CAT No. CS-MM-50545
CAS No. 2868-48-6
Category Impurity
Parent API
Formula C25H42O4
Mol. Wt. 406.60
(4R,4aS,12aS)-7-chloro-4-(dimethylamino)-3,10,12,12a-tetrahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,11,12a-hexahydrotetracene-2-carboxamide chemical structure
Custom Synthesis

(4R,4aS,12aS)-7-chloro-4-(dimethylamino)-3,10,12,12a-tetrahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,11,12a-hexahydrotetracene-2-carboxamide

CAT No. CS-O-39693
CAS No. 81163-11-3
Category Impurity
Parent API Chlortetracycline
Formula C22H21ClN2O7
Mol. Wt. 460.86
(4R,5R)-2,2-dimethyl-5-vinyl-1,3-dioxolane-4-carbaldehyde chemical structure
Custom Synthesis

(4R,5R)-2,2-dimethyl-5-vinyl-1,3-dioxolane-4-carbaldehyde

CAT No. CS-O-50139
CAS No. 155934-55-7
Category Impurity
Parent API Ticagrelor
Formula C8H12O3
Mol. Wt. 156.18
(4R,5R)-ISOCYCLOSERAM chemical structure
Custom Synthesis

(4R,5R)-ISOCYCLOSERAM

CAT No. CS-O-45741
CAS No. 1309958-03-9
Category Impurity
Parent API ISOCYCLOSERAM
Formula C23H19Cl2F4N3O4
Mol. Wt. 548.32
(4R,5S,6S)-3-(((3S,5S)-5-(Aminomethyl)pyrrolidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid chemical structure
Custom Synthesis

(4R,5S,6S)-3-(((3S,5S)-5-(Aminomethyl)pyrrolidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid

CAT No. CS-O-60753
CAS No. 175845-95-1
Category Impurity
Parent API Doripenem
Formula C15H23N3O4S
Mol. Wt. 341.43
(4R,6S)-6-(chloromethyl)-4- hydroxytetrahydro-2H-pyran-2-one chemical structure
Custom Synthesis

(4R,6S)-6-(chloromethyl)-4- hydroxytetrahydro-2H-pyran-2-one

CAT No. CS-O-37833
CAS No. 391218-14-7
Category Impurity
Parent API Rosuvastatin
Formula C6H9ClO3
Mol. Wt. 164.6
(4R,cis)-1,1-Dimethylethyl-6-aminoethyl-2,2-dimethyl-1,3-dioxane-4-acetate chemical structure
Custom Synthesis

(4R,cis)-1,1-Dimethylethyl-6-aminoethyl-2,2-dimethyl-1,3-dioxane-4-acetate

CAT No. CS-T-51151
CAS No. 93-02-7
Category Impurity
Parent API Atorvastatin
Formula C14H27NO4
Mol. Wt. 273.37
(4R-cis)-6-Aminomethyl-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester chemical structure
Custom Synthesis

(4R-cis)-6-Aminomethyl-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester

CAT No. CS-T-47921
CAS No. 853881-01-3
Category Impurity
Parent API
Formula -
Mol. Wt.
(4R-CIS)-6-HYDROXYMETHYL-2,2-DIMETHYL-1,3-DIOXANE-4-ACETIC ACID 1,1-DIMETHYLETHYL ESTER chemical structure
Custom Synthesis

(4R-CIS)-6-HYDROXYMETHYL-2,2-DIMETHYL-1,3-DIOXANE-4-ACETIC ACID 1,1-DIMETHYLETHYL ESTER

CAT No. CS-O-32239
CAS No. 124655-09-0
Category Impurity
Parent API Rosuvastatin
Formula C13H24O5
Mol. Wt. 260.3
(4RS)-N4-(7-CHLOROQUINOLIN-4-YL)-N1-ETHYLPENTANE-1,4-DIAMINE chemical structure
Custom Synthesis

(4RS)-N4-(7-CHLOROQUINOLIN-4-YL)-N1-ETHYLPENTANE-1,4-DIAMINE

CAT No. CS-O-65986
CAS No. -
Category Impurity
Parent API Hydroxychloroquine / Chloroquine
Formula C16H22ClN3
Mol. Wt. 291.82 g/mol
(4S)-1-(tert-butoxycarbonyl)-4-(4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazin-1-yl)pyrrolidine-2-carboxylic acid chemical structure
Custom Synthesis

(4S)-1-(tert-butoxycarbonyl)-4-(4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazin-1-yl)pyrrolidine-2-carboxylic acid

CAT No. CS-O-38438
CAS No. -
Category Impurity
Parent API Teneligliptin
Formula C24H33N5O4
Mol. Wt. 455.25
(4S)-1,9-Dioxaspiro[5.5]undecane-4-carboxylic acid chemical structure
Custom Synthesis

(4S)-1,9-Dioxaspiro[5.5]undecane-4-carboxylic acid

CAT No. CS-BL-00129
CAS No. 2381366-04-5
Category Impurity
Parent API -
Formula C10H16O4
Mol. Wt. 200.23
(4S)-2-amino-4-(2-amino-4-methylbenzamido)-5-oxohexanoic acid chemical structure
Custom Synthesis

(4S)-2-amino-4-(2-amino-4-methylbenzamido)-5-oxohexanoic acid

CAT No. CS-O-63271
CAS No. -
Category Impurity
Parent API Methotrexate
Formula C14H19N3O4
Mol. Wt. 293.32
(4S)-2-Hydroxy-2-methyl-4-thiazolidinecarboxylic Acid chemical structure
Custom Synthesis

(4S)-2-Hydroxy-2-methyl-4-thiazolidinecarboxylic Acid

CAT No. CS-O-43056
CAS No. -
Category Impurity
Parent API Amoxicillin
Formula C5H9NO3S
Mol. Wt. 163.19
(4S)-4-(4-bromophenyl)-5-hydroxypentyl methanesulfonate chemical structure
Custom Synthesis

(4S)-4-(4-bromophenyl)-5-hydroxypentyl methanesulfonate

CAT No. CS-O-54698
CAS No.
Category Impurity
Parent API Niraparib
Formula C12H17BrO4S
Mol. Wt. 337.23
(4S)-5-amino-4-(4-bromophenyl)pentyl methanesulfonate chemical structure
Custom Synthesis

(4S)-5-amino-4-(4-bromophenyl)pentyl methanesulfonate

CAT No. CS-O-54696
CAS No.
Category Impurity
Parent API Niraparib
Formula C12H18BrNO3S
Mol. Wt. 336.25
(4S)-Dicloxilloic Acid chemical structure
Custom Synthesis

(4S)-Dicloxilloic Acid

CAT No. CS-O-54787
CAS No. 1642576-88-2
Category Impurity
Parent API Dicloxilloic Acid
Formula C18H19Cl2N3O4S
Mol. Wt. 444.33
(4S)-Etapenem cyclomethyl ester chemical structure
Custom Synthesis

(4S)-Etapenem cyclomethyl ester

CAT No. CS-O-48682
CAS No. -
Category Impurity
Parent API Ertapenem
Formula C23H29N3O8S
Mol. Wt. 507.56
(4S)-Penicilloic Acids of Oxacillin chemical structure
Custom Synthesis

(4S)-Penicilloic Acids of Oxacillin

CAT No. CS-O-61328
CAS No. 1642629-95-5
Category Impurity
Parent API Oxacillin
Formula C19H21N3O6S
Mol. Wt. 419.45

Impurity Products at Clearsynth

Browse available Impurity products from Clearsynth. These compounds support analytical research, quality control and pharmaceutical development.

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