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Categories / Impurity

Impurity Products

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

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Donepezil Impurity 2 chemical structure
Custom Synthesis

Donepezil Impurity 2

CAT No. CS-P-07637
CAS No. 36517-91-6
Category Impurity
Parent API Donepezil
Formula C11H10O4
Mol. Wt. 206.2
Donepezil Impurity 3 chemical structure
Custom Synthesis

Donepezil Impurity 3

CAT No. CS-P-06999
CAS No. 1023500-88-0
Category Impurity
Parent API Donepezil
Formula C24H27NO4
Mol. Wt. 393.5
Donepezil Impurity 7 Hydrochloride chemical structure
Custom Synthesis

Donepezil Impurity 7 Hydrochloride

CAT No. CS-P-07641
CAS No. 197010-22-3 (free base)
Category Impurity
Parent API Donepezil
Formula -
Mol. Wt.
Donepezil Impurity 8 chemical structure
Custom Synthesis

Donepezil Impurity 8

CAT No. CS-P-07642
CAS No. 1808997-65-0
Category Impurity
Parent API Donepezil
Formula -
Mol. Wt.
Donepezil Impurity G chemical structure
Custom Synthesis

Donepezil Impurity G

CAT No. CS-O-33269
CAS No. 2452407-72-4
Category Impurity
Parent API Donepezil
Formula C24H27NO3
Mol. Wt. 377.48
Donepezil O-Benzyl Enol Ether chemical structure
Custom Synthesis

Donepezil O-Benzyl Enol Ether

CAT No. CS-T-93325
CAS No. -
Category Impurity
Parent API Donepezil
Formula C31H35NO3
Mol. Wt. 469.6
Donepezil Open Ring Impurity (sodium salt) chemical structure
Custom Synthesis

Donepezil Open Ring Impurity (sodium salt)

CAT No. CS-EO-03500
CAS No. 197010-25-6 (Freebase)
Category Impurity
Parent API Donepezil
Formula C24H28NO5 : Na
Mol. Wt. 410.5 : 23.0
Donepezil Open Ring Impurity HCl salt chemical structure
Custom Synthesis

Donepezil Open Ring Impurity HCl salt

CAT No. CS-O-51631
CAS No. 2217617-87-1
Category Impurity
Parent API Donepezil
Formula C24H30ClNO5
Mol. Wt. 447.96
Dopamine EP Impurity B chemical structure
Custom Synthesis

Dopamine EP Impurity B

CAT No. CS-P-07679
CAS No. 554-52-9
Category Impurity
Parent API Dopamine Hydrochloride
Formula C9H13NO2
Mol. Wt. 167.2
Dopamine Impurity 2 chemical structure
Custom Synthesis

Dopamine Impurity 2

CAT No. CS-EO-03501
CAS No. 95413-92-6
Category Impurity
Parent API Dopamine
Formula C10H14ClNO2 : HCl
Mol. Wt. 215.7 : 36.5
Dopamine Impurity 38 chemical structure
Custom Synthesis

Dopamine Impurity 38

CAT No. CS-O-60623
CAS No. 720685-12-1
Category Impurity
Parent API Dopamine
Formula C18H21NO3
Mol. Wt. 299.37
Dopamine Impurity 4 chemical structure
Custom Synthesis

Dopamine Impurity 4

CAT No. CS-O-39948
CAS No. 7236-38-6
Category Impurity
Parent API Dopamine
Formula C18H23NO4
Mol. Wt. 317.39
Dopamine-4-O-beta-Glucoside chemical structure
Custom Synthesis

Dopamine-4-O-beta-Glucoside

CAT No. CS-P-08952
CAS No. -
Category Impurity
Parent API Dopamine
Formula C14H21NO7
Mol. Wt. 315.3
Dopamine-N-beta-Glucoside chemical structure
Custom Synthesis

Dopamine-N-beta-Glucoside

CAT No. CS-P-08943
CAS No. 1053262-94-4
Category Impurity
Parent API Dopamine
Formula C14H21NO7
Mol. Wt. 315.32
Dopaquinone (Racemic) chemical structure
Custom Synthesis

Dopaquinone (Racemic)

CAT No. CS-O-42530
CAS No. 4430-97-1
Category Impurity
Parent API Dopaquinone
Formula C9H NO4
Mol. Wt. 195.17
Doravirine Acid Impurity chemical structure
Custom Synthesis

Doravirine Acid Impurity

CAT No. CS-O-45685
CAS No. -
Category Impurity
Parent API Doravirine
Formula C17H12ClF3N4O5
Mol. Wt. 444.75
Doravirine Amide Impurity chemical structure
Custom Synthesis

Doravirine Amide Impurity

CAT No. CS-O-45684
CAS No. 2054541-28-3
Category Impurity
Parent API Doravirine
Formula C17H13ClF3N5O4
Mol. Wt. 443.8
Doravirine Dimer Impurity (Bis-alkylated impurity) chemical structure
Custom Synthesis

Doravirine Dimer Impurity (Bis-alkylated impurity)

CAT No. CS-O-45683
CAS No. 2054541-33-0
Category Impurity
Parent API Doravirine
Formula C21H16ClF3N8O4
Mol. Wt. 536.9
Doravirine Pyridone Impurity (DOR-VI) chemical structure
Custom Synthesis

Doravirine Pyridone Impurity (DOR-VI)

CAT No. CS-O-45682
CAS No. 1155846-86-8
Category Impurity
Parent API Doravirine
Formula C13H6ClF3N2O2
Mol. Wt. 314.6
Doripenem Impurity chemical structure
Custom Synthesis

Doripenem Impurity

CAT No. CS-T-59361
CAS No. 189188-38-3
Category Impurity
Parent API
Formula -
Mol. Wt.
Doripenem Impurity 1 chemical structure
Custom Synthesis

Doripenem Impurity 1

CAT No. CS-P-07719
CAS No. 491878-07-0
Category Impurity
Parent API
Formula -
Mol. Wt.
Doripenem Impurity 2 chemical structure
Custom Synthesis

Doripenem Impurity 2

CAT No. CS-P-07720
CAS No. 396717-61-6
Category Impurity
Parent API
Formula -
Mol. Wt.
Doripenem Related Substance D chemical structure
Custom Synthesis

Doripenem Related Substance D

CAT No. CS-O-63146
CAS No. -
Category Impurity
Parent API Doripenem
Formula C15H26N4O7S2
Mol. Wt. 438.51
Doristerol chemical structure
Custom Synthesis

Doristerol

CAT No. CS-ED-41957
CAS No. 566-99-4
Category Impurity
Parent API Cholesterol
Formula C27H46O
Mol. Wt. 386.7

Impurity Products at Clearsynth

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

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