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Categories / Impurity

Impurity Products

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

Showing 73-96 of 27540 products
All In Stock Custom Synthesis
(3S,5S,6S)-Bupropion Impurity chemical structure
In Stock

(3S,5S,6S)-Bupropion Impurity

CAT No. CS-O-15905
CAS No. 2133460-42-9
Category Impurity
Parent API Bupropion
Formula C12H14ClNO3S
Mol. Wt. 287.76
(3S,5S,6S)-Bupropion TFA salt chemical structure
In Stock

(3S,5S,6S)-Bupropion TFA salt

CAT No. CS-O-48606
CAS No. 2133460-42-9 (Freebase)
Category Impurity
Parent API Bupropion
Formula C14H15ClF3NO5S
Mol. Wt. 401.78
(3S,8R,9R,12S)-Atazanavir chemical structure
In Stock

(3S,8R,9R,12S)-Atazanavir

CAT No. CS-O-14262
CAS No.
Category Impurity
Parent API Atazanavir
Formula C38H52N6O7
Mol. Wt. 704.86
(4-​Methylquinazolin-​2-​yl)​methanol chemical structure
In Stock

(4-​Methylquinazolin-​2-​yl)​methanol

CAT No. CS-AQ-00174
CAS No. 13535-91-6
Category Impurity
Parent API Linagliptin
Formula C10H10N2O
Mol. Wt. 174.20
(4bS,8aS,9S)-11-methyl-6,7,8,8a,9,10-hexahydro-5H-9,4b-(epiminoethano)phenanthren-3-ol (2S,3S)-2,3-dihydroxysuccinate chemical structure
In Stock

(4bS,8aS,9S)-11-methyl-6,7,8,8a,9,10-hexahydro-5H-9,4b-(epiminoethano)phenanthren-3-ol (2S,3S)-2,3-dihydroxysuccinate

CAT No. CS-T-52351
CAS No. 143-98-6
Category Impurity
Parent API
Formula C21H29NO7
Mol. Wt. 407.46
(4R)-3-[(5S)-5-(4-Fluorophenyl)-5-Hydroxypentanoyl]-4-Phenyl-1,3-Oxazolidin-2-One chemical structure
In Stock

(4R)-3-[(5S)-5-(4-Fluorophenyl)-5-Hydroxypentanoyl]-4-Phenyl-1,3-Oxazolidin-2-One

CAT No. CS-O-15806
CAS No. 404874-94-8
Category Impurity
Parent API Ezetimibe
Formula C20H20FNO4
Mol. Wt. 357.38
(4R,6S)-5,6-Dihydro-4-hydroxy-6-methylthieno[2,3-b]thiopyran-7,7-dioxide chemical structure
In Stock

(4R,6S)-5,6-Dihydro-4-hydroxy-6-methylthieno[2,3-b]thiopyran-7,7-dioxide

CAT No. CS-O-10657
CAS No. 147128-77-6
Category Impurity
Parent API Dorzolamide
Formula C8H10O3S2
Mol. Wt. 218.29
(4S)-3-[(4E)-5-(4-fluorophenyl)pent-4-enoyl]-4-phenyl-1,3-oxazolidin-2-one chemical structure
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(4S)-3-[(4E)-5-(4-fluorophenyl)pent-4-enoyl]-4-phenyl-1,3-oxazolidin-2-one

CAT No. CS-O-16007
CAS No. 190595-62-1
Category Impurity
Parent API Ezetimibe
Formula C20H18FNO3
Mol. Wt. 339.36
(4S)-3-[5-(4-Fluorophenyl)Pentanoyl]-4-Phenyl-1,3-Oxazolidin-2-One chemical structure
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(4S)-3-[5-(4-Fluorophenyl)Pentanoyl]-4-Phenyl-1,3-Oxazolidin-2-One

CAT No. CS-O-15945
CAS No.
Category Impurity
Parent API Ezetimibe
Formula C20H20FNO3
Mol. Wt. 341.38
(4S)-4-(Phenylthio)-L-proline Hydrochloride chemical structure
In Stock

(4S)-4-(Phenylthio)-L-proline Hydrochloride

CAT No. CS-T-60509
CAS No. 105107-84-4
Category Impurity
Parent API Zofenopril
Formula C11H14ClNO2S
Mol. Wt. 259.75
(4S)-4-Hydroxyphenylmethoxy-2-methoxy Empagliflozin chemical structure
In Stock

(4S)-4-Hydroxyphenylmethoxy-2-methoxy Empagliflozin

CAT No. CS-O-48957
CAS No. 2253771-11-6
Category Impurity
Parent API Empagliflozin
Formula C21H25ClO8
Mol. Wt. 440.87
(4S)-4-Propyloxolan-2-one chemical structure
In Stock

(4S)-4-Propyloxolan-2-one

CAT No. CS-ED-00167
CAS No. 63095-60-3
Category Impurity
Parent API pilocarpine
Formula C7H12O2
Mol. Wt. 128.17
(4S)-Brivaracetam chemical structure
In Stock

(4S)-Brivaracetam

CAT No. CS-T-49593
CAS No. 357336-19-7
Category Impurity
Parent API Brivaracetam
Formula C11H20N2O2
Mol. Wt. 212.29
(4S,5R)-3-(Tert-butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carboxylic acid chemical structure
In Stock

(4S,5R)-3-(Tert-butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carboxylic acid

CAT No. CS-O-32174
CAS No. 143527-70-2
Category Impurity
Parent API Cabazitaxel
Formula C17H23NO5
Mol. Wt. 321.4
(4S,5R)-3-Benzoyl-2-(4-methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid chemical structure
In Stock

(4S,5R)-3-Benzoyl-2-(4-methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid

CAT No. CS-DV-00215
CAS No. 949023-16-9
Category Impurity
Parent API Paclitaxel
Formula C24H21NO5
Mol. Wt. 403.43
(4S,6S)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester chemical structure
In Stock

(4S,6S)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester

CAT No. CS-T-51365
CAS No. 196085-85-5
Category Impurity
Parent API Atorvastatin
Formula C14H23NO4
Mol. Wt. 269.3
(5-PyriMidinecarboxylicacid, 4-[[(3-chloro-4-Methoxyphenyl)Methyl]aMino]-2-(Methylthio)-,ethyl ester) chemical structure
In Stock

(5-PyriMidinecarboxylicacid, 4-[[(3-chloro-4-Methoxyphenyl)Methyl]aMino]-2-(Methylthio)-,ethyl ester)

CAT No. CS-O-32414
CAS No. 330785-81-4
Category Impurity
Parent API Avanafil
Formula C16H18ClN3O3S
Mol. Wt. 367.85
(5R)-Flucloxacillin Penilloic Acid chemical structure
In Stock

(5R)-Flucloxacillin Penilloic Acid

CAT No. CS-T-54744
CAS No. 42947-70-6
Category Impurity
Parent API Cloxacillin
Formula C19H19ClFN3O6S
Mol. Wt. 471.89
(5R)-Rosuvastatin Methyl Ester chemical structure
In Stock

(5R)-Rosuvastatin Methyl Ester

CAT No. CS-T-85734
CAS No. 1776088-23-3
Category Impurity
Parent API Rosuvastatin
Formula C23H30FN3O6S
Mol. Wt. 495.56
(5S)-N,5-bis(4-fluorophenyl)-5-hydroxypentanamide chemical structure
In Stock

(5S)-N,5-bis(4-fluorophenyl)-5-hydroxypentanamide

CAT No. CS-O-15766
CAS No. -
Category Impurity
Parent API Ezetimibe
Formula C17H17F2NO2
Mol. Wt. 305.32
(6R-trans)-7-[[(2-Amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en chemical structure
In Stock

(6R-trans)-7-[[(2-Amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en

CAT No. CS-T-48126
CAS No. 79350-10-0
Category Impurity
Parent API Cefdinir
Formula C14H14N4O4S2
Mol. Wt. 366.42
(8S)-2-Bromo-α-Ergocryptine chemical structure
In Stock

(8S)-2-Bromo-α-Ergocryptine

CAT No. CS-T-49670
CAS No. 65700-36-9
Category Impurity
Parent API Bromocriptine Mesylate
Formula C32H40BrN5O5
Mol. Wt. 654.59
(aS)-N,N,α-Trimethyl-3-(4-nitrophenoxy)benzenemethanamine chemical structure
In Stock

(aS)-N,N,α-Trimethyl-3-(4-nitrophenoxy)benzenemethanamine

CAT No. CS-T-45683
CAS No. 1346242-32-7
Category Impurity
Parent API Rivastigmine
Formula C16H18N2O3
Mol. Wt. 286.3
(Des-Pro-NHEt9)-Leuprolide chemical structure
In Stock

(Des-Pro-NHEt9)-Leuprolide

CAT No. CS-AX-01296
CAS No. 112642-14-5
Category Impurity
Parent API Leuprolide
Formula C52H72N112
Mol. Wt. 1085.21

Impurity Products at Clearsynth

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

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