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Categories / Impurity

Impurity Products

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

Showing 6121-6144 of 27541 products
All In Stock Custom Synthesis
(3R,​4S)​-​3-​fluoro-​4-​methoxypiperidine chemical structure
Custom Synthesis

(3R,​4S)​-​3-​fluoro-​4-​methoxypiperidine

CAT No. CS-O-40299
CAS No. 2306252-56-0
Category Impurity
Parent API
Formula -
Mol. Wt. 133.16
(3R,11bS)-Tetrabenazine chemical structure
Custom Synthesis

(3R,11bS)-Tetrabenazine

CAT No. CS-O-62858
CAS No. -
Category Impurity
Parent API Tetrabenazine
Formula C19H27NO3
Mol. Wt. 317.43
(3R,3aR,6aS)-Hexahydrofuro[2,3-b]furan-3-yl 4-Nitrophenyl Ester Carbonic Acid chemical structure
Custom Synthesis

(3R,3aR,6aS)-Hexahydrofuro[2,3-b]furan-3-yl 4-Nitrophenyl Ester Carbonic Acid

CAT No. CS-T-55616
CAS No. 252873-51-1
Category Impurity
Parent API Darunavir
Formula C13H13NO7
Mol. Wt. 295.3
(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yl-4-(N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-d9-sulfamoyl)phenylcarbamate(Darunavir-d9 Impurity) chemical structure
Custom Synthesis

(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yl-4-(N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-d9-sulfamoyl)phenylcarbamate(Darunavir-d9 Impurity)

CAT No. CS-T-97467
CAS No.
Category Impurity
Parent API
Formula C27H28D9N3O7S
Mol. Wt. 556.72
(3R,4R)-2-((S)-1,2-dihydroxyethyl)-5-(3-((5-(4-fluorophenyl)thiophen-2-yl)methyl)-4-methylphenyl)tetrahydrofuran-3,4-diol chemical structure
Custom Synthesis

(3R,4R)-2-((S)-1,2-dihydroxyethyl)-5-(3-((5-(4-fluorophenyl)thiophen-2-yl)methyl)-4-methylphenyl)tetrahydrofuran-3,4-diol

CAT No. CS-O-42769
CAS No. -
Category Impurity
Parent API Canagliflozin
Formula C24H25FO5S
Mol. Wt. 444.52
(3R,4R)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-phenylpiperidine hydrochloride chemical structure
Custom Synthesis

(3R,4R)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-phenylpiperidine hydrochloride

CAT No. CS-O-37354
CAS No. -
Category Impurity
Parent API
Formula -
Mol. Wt. 347.84
(3R,4R)-3-Amino-1-Boc-4-hydroxypyrrolidine chemical structure
Custom Synthesis

(3R,4R)-3-Amino-1-Boc-4-hydroxypyrrolidine

CAT No. CS-AC-05026
CAS No. 330681-18-0
Category Impurity
Parent API
Formula -
Mol. Wt.
(3R,4R)-3-Bromoacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide chemical structure
Custom Synthesis

(3R,4R)-3-Bromoacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide

CAT No. CS-O-58522
CAS No.
Category Impurity
Parent API Upadacitinib
Formula C11H16BrF3N2O2
Mol. Wt. 345.16
(3R,4R)-4-Amino-1-oxyl-2,2,6,6-tetramethylpiperidine-3-carboxylic Acid chemical structure
Custom Synthesis

(3R,4R)-4-Amino-1-oxyl-2,2,6,6-tetramethylpiperidine-3-carboxylic Acid

CAT No. CS-T-03202
CAS No. 691364-99-5
Category Impurity
Parent API
Formula -
Mol. Wt.
(3R,4R)-N-Methyl Paroxetine chemical structure
Custom Synthesis

(3R,4R)-N-Methyl Paroxetine

CAT No. CS-O-59321
CAS No. 112058-87-4
Category Impurity
Parent API Paroxetine
Formula C20H22FNO3
Mol. Wt. 343.39
(3R,4R,5R)-3,4-Dihydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester chemical structure
Custom Synthesis

(3R,4R,5R)-3,4-Dihydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester

CAT No. CS-T-53254
CAS No. 220626-12-0
Category Impurity
Parent API Oseltamivir
Formula C10H16O7S
Mol. Wt. 280.3
(3R,4R,5R)-4-Acetylamino-5-amino-3-(1-ethyl-propoxy)-cyclohex-1-enecarboxylic acid ethyl ester chemical structure
Custom Synthesis

(3R,4R,5R)-4-Acetylamino-5-amino-3-(1-ethyl-propoxy)-cyclohex-1-enecarboxylic acid ethyl ester

CAT No. CS-O-35872
CAS No. -
Category Impurity
Parent API Oseltamivir
Formula C16H28N2O4
Mol. Wt. 312.4
(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-methylethoxy)-1-Cyclohexene-1-carboxylic Acid Ethyl Ester chemical structure
Custom Synthesis

(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-methylethoxy)-1-Cyclohexene-1-carboxylic Acid Ethyl Ester

CAT No. CS-T-93560
CAS No. 1052063-36-1
Category Impurity
Parent API
Formula C14H24N2O4
Mol. Wt. 284.35
(3R,4R,5S)-ethyl 4-(tert-butylamino)-5- (diallylamino)-3-hydroxycyclohex-1- enecarboxylate chemical structure
Custom Synthesis

(3R,4R,5S)-ethyl 4-(tert-butylamino)-5- (diallylamino)-3-hydroxycyclohex-1- enecarboxylate

CAT No. CS-O-37427
CAS No. -
Category Impurity
Parent API Oseltamivir
Formula C19H32N2O3
Mol. Wt. 336.47
(3R,4S)-​Tofacitinib citirate chemical structure
Custom Synthesis

(3R,4S)-​Tofacitinib citirate

CAT No. CS-O-39729
CAS No. 2174011-53-9
Category Impurity
Parent API Tofacitinib
Formula C16H20N6O : C6H8O7
Mol. Wt. 312.4 : 192.1
(3R,4S)-1-Benzyl-N,4-dimethylpiperidin-3-amine chemical structure
Custom Synthesis

(3R,4S)-1-Benzyl-N,4-dimethylpiperidin-3-amine

CAT No. CS-TA-27807
CAS No. 1638499-31-6
Category Impurity
Parent API Tofacitinib
Formula C14H22N2
Mol. Wt. 218.34g/mol
(3R,4S)-3,4-Dimethyl-4-(3-hydroxyphenyl)piperidine chemical structure
Custom Synthesis

(3R,4S)-3,4-Dimethyl-4-(3-hydroxyphenyl)piperidine

CAT No. CS-O-16754
CAS No. 59381-63-4
Category Impurity
Parent API
Formula -
Mol. Wt.
(3R,4S)-3-Acetyl-4-ethyl-N-(2,2,2-trifluoro ethyl)pyrrolidine-1-carboxamide chemical structure
Custom Synthesis

(3R,4S)-3-Acetyl-4-ethyl-N-(2,2,2-trifluoro ethyl)pyrrolidine-1-carboxamide

CAT No. CS-O-58517
CAS No. 2576426-11-2
Category Impurity
Parent API Upadacitinib
Formula C11H17F3N2O2
Mol. Wt. 266.26
(3R,4S)-3-Chloroacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide chemical structure
Custom Synthesis

(3R,4S)-3-Chloroacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide

CAT No. CS-O-58526
CAS No.
Category Impurity
Parent API Upadacitinib
Formula C11H16ClF3N2O2
Mol. Wt. 300.71
(3R,4S)-3-Dibromoacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide chemical structure
Custom Synthesis

(3R,4S)-3-Dibromoacetyl-4-ethyl-N-(2,2,2-trifluoroethyl) pyrrolidine-1-carboxamide

CAT No. CS-O-58520
CAS No.
Category Impurity
Parent API Upadacitinib
Formula C11H15Br2F3N2O2
Mol. Wt. 424.06
(3R,4S)-4-Ethyl-3-pyrrolidinecarboxylic acid chemical structure
Custom Synthesis

(3R,4S)-4-Ethyl-3-pyrrolidinecarboxylic acid

CAT No. CS-O-54951
CAS No. 1821826-28-1
Category Impurity
Parent API -
Formula C7H13NO2
Mol. Wt. 143.18
(3R,4S)-N-Methyl Paroxetine chemical structure
Custom Synthesis

(3R,4S)-N-Methyl Paroxetine

CAT No. CS-O-59325
CAS No. 2575750-19-3
Category Impurity
Parent API Paroxetine
Formula C20H22FNO3
Mol. Wt. 343.39
(3R,4S)-N-Phenoxycarbonyl Paroxetine chemical structure
Custom Synthesis

(3R,4S)-N-Phenoxycarbonyl Paroxetine

CAT No. CS-O-37355
CAS No.
Category Impurity
Parent API Paroxetine
Formula C26H24FNO5
Mol. Wt. 449.47
(3R,4S,5R)-5-((S)-2,3-Bis((trimethylsilyl)oxy)propyl)-3,4-bis((trimethylsilyl)oxy)dihydrofuran-2(3H)-one chemical structure
Custom Synthesis

(3R,4S,5R)-5-((S)-2,3-Bis((trimethylsilyl)oxy)propyl)-3,4-bis((trimethylsilyl)oxy)dihydrofuran-2(3H)-one

CAT No. CS-O-53676
CAS No.
Category Impurity
Parent API -
Formula C19H44O6Si4
Mol. Wt. 480.89

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