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Categories / Impurity

Impurity Products

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

Showing 193-216 of 27540 products
All In Stock Custom Synthesis
(Z)-1-[4-(2-Chloroethoxyphenyl]-1,2-diphenyl-1-butene chemical structure
In Stock

(Z)-1-[4-(2-Chloroethoxyphenyl]-1,2-diphenyl-1-butene

CAT No. CS-T-71746
CAS No. 97818-83-2
Category Impurity
Parent API Tamoxifen
Formula C24H23ClO
Mol. Wt. 362.9
(Z)-3-(4-Amino-3,5-dimethylphenyl)acrylonitrile chemical structure
Custom Synthesis

(Z)-3-(4-Amino-3,5-dimethylphenyl)acrylonitrile

CAT No. CS-T-02492
CAS No. 661489-22-1
Category Impurity
Parent API Rilpivirine
Formula C11H12N2
Mol. Wt. 172.2
(Z)-Mycophenolic Acid chemical structure
In Stock

(Z)-Mycophenolic Acid

CAT No. CS-P-02701
CAS No. 2767988-82-7
Category Impurity
Parent API Mycophenolic Acid
Formula C17H20O6
Mol. Wt. 320.34
(Z)-Pitavastatin Calcium Salt chemical structure
In Stock

(Z)-Pitavastatin Calcium Salt

CAT No. CS-T-40198
CAS No. 1159588-21-2
Category Impurity
Parent API Pitavastatin
Formula C25H24FNO4 . ½Ca
Mol. Wt. 441.50
*Levothyroxine chemical structure
In Stock

*Levothyroxine

CAT No. CS-T-44338
CAS No. 32180-11-3
Category Impurity
Parent API Levothyroxine
Formula C16H13I4NO4
Mol. Wt. 790.9
[(Methoxy)methyl]triphenylphosphonium Chloride chemical structure
In Stock

[(Methoxy)methyl]triphenylphosphonium Chloride

CAT No. CS-T-32585
CAS No. 4009-98-7
Category Impurity
Parent API
Formula -
Mol. Wt.
[2-(4-Aminomethyl-Phenoxy)-Ethyl]-Dimethyl-Amine chemical structure
In Stock

[2-(4-Aminomethyl-Phenoxy)-Ethyl]-Dimethyl-Amine

CAT No. CS-M-23074
CAS No. 20059-73-8
Category Impurity
Parent API Itopride
Formula C11H18N2O
Mol. Wt. 194.27
[Leu3]-Oxytocin trifluoroacetic acid Salt chemical structure
Custom Synthesis

[Leu3]-Oxytocin trifluoroacetic acid Salt

CAT No. CS-O-46759
CAS No. 4294-11-5 (Freebase)
Category Impurity
Parent API Oxytocin
Formula C45H67F3N12O14S2
Mol. Wt. 1121.22
[R-(R*,S*)]-α-[(1-Carboxyethyl)amino]-γ-oxo-benzenebutanoic Acid Monoethyl Ester chemical structure
In Stock

[R-(R*,S*)]-α-[(1-Carboxyethyl)amino]-γ-oxo-benzenebutanoic Acid Monoethyl Ester

CAT No. CS-T-71142
CAS No. 105167-27-9
Category Impurity
Parent API Enalapril
Formula C15H19NO5
Mol. Wt. 293.30
1-({[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl}oxy)pyrrolidine-2,5-dione chemical structure
In Stock

1-({[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl}oxy)pyrrolidine-2,5-dione

CAT No. CS-O-31845
CAS No. 253265-97-3
Category Impurity
Parent API Darunavir
Formula C11H13NO7
Mol. Wt. 271.2
1-(2-Bromo-6-Fluorophenyl)-3-(2-Methoxy-5-(Trifluoromethyl)Phenyl)Urea chemical structure
In Stock

1-(2-Bromo-6-Fluorophenyl)-3-(2-Methoxy-5-(Trifluoromethyl)Phenyl)Urea

CAT No. CS-O-48633
CAS No. 917389-23-2
Category Impurity
Parent API Letermovir
Formula C15H11BrF4N2O2
Mol. Wt. 407.16
1-(2-Hydroxy-5-Nitrophenyl)Ethanone chemical structure
In Stock

1-(2-Hydroxy-5-Nitrophenyl)Ethanone

CAT No. CS-M-47136
CAS No. 1450-76-6
Category Impurity
Parent API Celiprolol
Formula C8H7NO4
Mol. Wt. 181.1
1-(3’-acetoxyphenyl)-N,N-dimethylethylamine chemical structure
In Stock

1-(3’-acetoxyphenyl)-N,N-dimethylethylamine

CAT No. CS-O-56149
CAS No. 2168538-07-4
Category Impurity
Parent API Rivastigmine
Formula C12H17NO2
Mol. Wt. 207.27
1-(3-Bromophenyl)piperazine Hydrochloride chemical structure
In Stock

1-(3-Bromophenyl)piperazine Hydrochloride

CAT No. CS-T-08796
CAS No. 796856-45-6
Category Impurity
Parent API -
Formula -
Mol. Wt. -
1-(3-Methoxy-4-(3-(4-(6-methoxybenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)phenyl)ethanone chemical structure
In Stock

1-(3-Methoxy-4-(3-(4-(6-methoxybenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)phenyl)ethanone

CAT No. CS-O-34007
CAS No. 2106771-05-3
Category Impurity
Parent API Iloperidone
Formula C25H30N2O5
Mol. Wt. 438.52
1-(4-(3-(4-(6-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-hydroxyphenyl)ethanone chemical structure
In Stock

1-(4-(3-(4-(6-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-hydroxyphenyl)ethanone

CAT No. CS-O-34003
CAS No. 133454-57-6
Category Impurity
Parent API Iloperidone
Formula C23H25FN2O4
Mol. Wt. 412.45
1-(4-(4-(Benzyloxy)-3-bromophenyl)piperazin-1-yl)ethanone chemical structure
In Stock

1-(4-(4-(Benzyloxy)-3-bromophenyl)piperazin-1-yl)ethanone

CAT No. CS-O-45815
CAS No.
Category Impurity
Parent API Ketoconazole
Formula C19H21BrN2O2
Mol. Wt. 389.29
1-(4-(Benzyloxy)-3-nitrophenyl)-2-bromoethanone chemical structure
In Stock

1-(4-(Benzyloxy)-3-nitrophenyl)-2-bromoethanone

CAT No. CS-T-06123
CAS No. 43229-01-2
Category Impurity
Parent API Formoterol
Formula C15H12BrNO4
Mol. Wt. 350.16
1-(tert-butyl) 2-methyl (2S,4R)-4-fluoropyrrolidine-1,2-dicarboxylate chemical structure
In Stock

1-(tert-butyl) 2-methyl (2S,4R)-4-fluoropyrrolidine-1,2-dicarboxylate

CAT No. CS-BX-02491
CAS No. 203866-18-6
Category Impurity
Parent API Proline
Formula C11H18FNO4
Mol. Wt. 247.27
1,2,3,4-Tetrahydro-4,6-dihydroxy-2-methylisoquinoline Hydrochloride chemical structure
In Stock

1,2,3,4-Tetrahydro-4,6-dihydroxy-2-methylisoquinoline Hydrochloride

CAT No. CS-O-11270
CAS No. 57196-61-9
Category Impurity
Parent API Phenylephrine
Formula C10H14ClNO2
Mol. Wt. 215.68
1,2,3,4-Tetrahydrobenzoazepine-5-one chemical structure
In Stock

1,2,3,4-Tetrahydrobenzoazepine-5-one

CAT No. CS-O-31938
CAS No. 1127-74-8
Category Impurity
Parent API Tolvaptan
Formula C10H11NO
Mol. Wt. 161.2
1,2-Dihydro Betamethasone 17-Valerate chemical structure
In Stock

1,2-Dihydro Betamethasone 17-Valerate

CAT No. CS-T-52982
CAS No. 154713-07-2
Category Impurity
Parent API Betamethasone
Formula C27H39FO6
Mol. Wt. 478.59
1,2-Dilinoleoyl-3-oleoyl-rac-glycerol chemical structure
In Stock

1,2-Dilinoleoyl-3-oleoyl-rac-glycerol

CAT No. CS-T-53333
CAS No. 2190-21-8
Category Impurity
Parent API Sesame Oil
Formula C57H100O6
Mol. Wt. 881.40
1,2-Dilinoleoyl-3-palmitoyl-rac-glycerol chemical structure
In Stock

1,2-Dilinoleoyl-3-palmitoyl-rac-glycerol

CAT No. CS-T-53334
CAS No. 2190-15-0
Category Impurity
Parent API Sesame Oil
Formula C55H9806
Mol. Wt. 855.36

Impurity Products at Clearsynth

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

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