Donepezil Related Products 
Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Abacavir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Abacavir impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Abacavir-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.
3-Hydroxy Donepezil (USP)
CAT No: VS-D077026
CAS No: 2097683-67-3
Mol.F.: C24H29NO4
Mol.Wt.: 395.49
Status: Custom Synthesis
6-O-Desmethyl Donepezil Glucuronide (Mixture of Diastereomers)
CAT No: VS-D077028
CAS No: 220170-73-0
Mol.F.: C29H35NO9
Mol.Wt.: 541.6
Status: Custom Synthesis
Dehydrodeoxy Donepezil
CAT No: VS-D077012
CAS No: 120013-45-8
Mol.F.: C24H29NO2
Mol.Wt.: 363.49
Status: Limited Stock
Deoxydonepezil
CAT No: VS-D077013
CAS No: 1034439-57-0
Mol.F.: C24H31NO2 : HCl
Mol.Wt.: 365.5 : 36.5
Status: Custom Synthesis
Donepezil
CAT No: VS-D077000
CAS No: 120014-06-4
Mol.F.: C24H29NO3
Mol.Wt.: 379.5
Status: Custom Synthesis
Donepezil Aldehyde Impurity
CAT No: VS-D077019
CAS No: 22065-85-6
Mol.F.: C13H17NO
Mol.Wt.: 203.28
Status: Custom Synthesis
Donepezil alkene pyridine N-oxide
CAT No: VS-D077022
CAS No: 896134-06-8
Mol.F.: C17H15NO4
Mol.Wt.: 297.31
Status: In Stock
Donepezil Alkene Pyridine N-Oxide
CAT No: VS-D077027
CAS No: 2452407-68-8
Mol.F.: C17H151NO4
Mol.Wt.: 297.31
Status: Custom Synthesis
Donepezil Benzyl Bromide
CAT No: VS-D077011
CAS No: 844694-85-5
Mol.F.: C31H36NO3 : Br
Mol.Wt.: 470.6 : 79.9
Status: Custom Synthesis
Donepezil Dehydro Impurity (E/Z mixture)
CAT No: VS-D077047
CAS No: 120014-07-5
Mol.F.: C24H27NO3
Mol.Wt.: 377.48
Status: Custom Synthesis
Donepezil Deoxy Impurity
CAT No: VS-D077055
CAS No: 844694-84-4
Mol.F.: C24H31NO2
Mol.Wt.: 365.51
Status: In Stock
Donepezil Didesmethyl Impurity
CAT No: VS-D077021
CAS No: 220170-71-8
Mol.F.: C22H25NO3
Mol.Wt.: 351.44
Status: Custom Synthesis
Donepezil Dihydro Impurity
CAT No: VS-D077014
CAS No: 120012-04-6
Mol.F.: C24H31NO3
Mol.Wt.: 381.51
Status: Custom Synthesis
Donepezil EP Impurity A
CAT No: VS-D077002
CAS No: 120014-30-4
Mol.F.: C17H23NO3
Mol.Wt.: 289.4
Status: Custom Synthesis
Donepezil EP Impurity A (HCl)
CAT No: VS-D077003
CAS No: 120013-39-0
Mol.F.: C17H23NO3 : HCl
Mol.Wt.: 289.4 : 36.5
Status: Custom Synthesis
Donepezil EP Impurity B
CAT No: VS-D077004
CAS No: 2107-69-9
Mol.F.: C11H12O3
Mol.Wt.: 192.22
Status: Custom Synthesis
Donepezil EP Impurity C
CAT No: VS-D077005
CAS No: 2452407-76-8
Mol.F.: C24H29NO4
Mol.Wt.: 395.5
Status: In Stock
Donepezil EP Impurity D
CAT No: VS-D077006
CAS No: 4803-57-0
Mol.F.: C17H17NO3
Mol.Wt.: 283.32
Status: Custom Synthesis
Donepezil EP Impurity E
CAT No: VS-D077007
CAS No: 231283-82-2
Mol.F.: C24H24NO3 . Br
Mol.Wt.: 374.46 79.90
Status: Custom Synthesis
Donepezil EP Impurity F
CAT No: VS-D077008
CAS No: 145546-80-1
Mol.F.: C24H27NO3
Mol.Wt.: 377.48
Status: Custom Synthesis
Donepezil EP Impurity G
CAT No: VS-D077009
CAS No: 2452407-72-4
Mol.F.: C24H27NO3
Mol.Wt.: 377.48
Status: Custom Synthesis
Donepezil Hydrochloride
CAT No: VS-D077018
CAS No: 120011-70-3
Mol.F.: C24H29NO3 : HCl
Mol.Wt.: 379.5 : 36.5
Status: In Stock
Donepezil Hydrochloride Monohydrate
CAT No: VS-D077057
CAS No: 884740-09-4
Mol.F.: C24H29NO3 : HCl : H2O
Mol.Wt.: 379.5 : 36.5 : 18.0
Status: Custom Synthesis
Donepezil Hydroxy Acid Impurity
CAT No: VS-D077010
CAS No: N/A
Mol.F.: C24H31NO5
Mol.Wt.: 413.5
Status: Custom Synthesis
Donepezil Impurity 1
CAT No: VS-D077029
CAS No: N/A
Mol.F.: C24H29NO5 : Na
Mol.Wt.: 411.5 : 23.0
Status: Custom Synthesis
Donepezil Impurity 11
CAT No: VS-D077036
CAS No: 2230493-73-7
Mol.F.: C24H27NO3
Mol.Wt.: 377.49
Status: Custom Synthesis
Donepezil Impurity 12
CAT No: VS-D077037
CAS No: N/A
Mol.F.: C24H25NO4
Mol.Wt.: 391.46
Status: Custom Synthesis
Donepezil Impurity 13
CAT No: VS-D077038
CAS No: 608511-44-0
Mol.F.: C24H27NO3
Mol.Wt.: 377.5
Status: Custom Synthesis
Donepezil Impurity 14
CAT No: VS-D077039
CAS No: 329010-67-5
Mol.F.: C24H29NO4
Mol.Wt.: 395.5
Status: Custom Synthesis
Donepezil Impurity 15
CAT No: VS-D077040
CAS No: N/A
Mol.F.: C17H23NO3
Mol.Wt.: 289.4
Status: Custom Synthesis
Donepezil Impurity 16
CAT No: VS-D077041
CAS No: 1034439-43-4
Mol.F.: C17H25NO2 : HCl
Mol.Wt.: 275.4 : 36.5
Status: Custom Synthesis
Donepezil Impurity 17
CAT No: VS-D077042
CAS No: N/A
Mol.F.: C25H26N2O2
Mol.Wt.: 386.5
Status: Custom Synthesis
Donepezil Impurity 18
CAT No: VS-D077043
CAS No: 110406-97-8
Mol.F.: C11H15ClO2
Mol.Wt.: 214.7
Status: Custom Synthesis
Donepezil Impurity 19
CAT No: VS-D077044
CAS No: 50786-50-0
Mol.F.: C11H15ClO3
Mol.Wt.: 230.7
Status: Custom Synthesis
Donepezil Impurity 2
CAT No: VS-D077030
CAS No: 36517-91-6
Mol.F.: C11H10O4
Mol.Wt.: 206.2
Status: Custom Synthesis
Donepezil Impurity 20
CAT No: VS-D077045
CAS No: 120013-56-1
Mol.F.: C23H27NO3
Mol.Wt.: 365.5
Status: Custom Synthesis
Donepezil Impurity 21
CAT No: VS-D077046
CAS No: 4693-38-3
Mol.F.: C11H13ClO3
Mol.Wt.: 228.7
Status: Custom Synthesis
Donepezil Impurity 22
CAT No: VS-D077048
CAS No: 5888-52-8
Mol.F.: C11H16O2
Mol.Wt.: 180.24
Status: Custom Synthesis
Donepezil Impurity 23
CAT No: VS-D077049
CAS No: 104397-78-6
Mol.F.: C11H14O4
Mol.Wt.: 210.23
Status: Custom Synthesis
Donepezil Impurity 24
CAT No: VS-D077050
CAS No: 2069210-78-0
Mol.F.: C24H27NO3
Mol.Wt.: 377.48
Status: Custom Synthesis
Donepezil Impurity 25
CAT No: VS-D077051
CAS No: 2069210-77-9
Mol.F.: C24H27NO3
Mol.Wt.: 377.48
Status: Custom Synthesis
Donepezil Impurity 26
CAT No: VS-D077052
CAS No: 2069210-84-8
Mol.F.: C24H29NO3
Mol.Wt.: 379.49
Status: Custom Synthesis
Donepezil Impurity 27
CAT No: VS-D077053
CAS No: 2069210-83-7
Mol.F.: C24H29NO3
Mol.Wt.: 379.49
Status: Custom Synthesis
Donepezil Impurity 3
CAT No: VS-D077031
CAS No: 1023500-88-0
Mol.F.: C24H27NO4
Mol.Wt.: 393.49
Status: Custom Synthesis
Donepezil Impurity 4
CAT No: VS-D077032
CAS No: 2452407-69-9
Mol.F.: C24H29NO3
Mol.Wt.: 379.5
Status: Custom Synthesis
Donepezil Impurity 6
CAT No: VS-D077033
CAS No: N/A
Mol.F.: C31H35NO3
Mol.Wt.: 469.63
Status: Custom Synthesis
Donepezil Impurity 8
CAT No: VS-D077034
CAS No: 1808997-65-0
Mol.F.: C18H23NO4
Mol.Wt.: 317.38
Status: Custom Synthesis
Donepezil Impurity 9
CAT No: VS-D077035
CAS No: 2452407-71-3
Mol.F.: C26H33NO4
Mol.Wt.: 423.56
Status: Custom Synthesis
Donepezil Maleate
CAT No: VS-D077001
CAS No: N/A
Mol.F.: C24H31NO2 : C4H4O4
Mol.Wt.: 365.5 : 116.1
Status: Custom Synthesis
Donepezil N-Oxide
CAT No: VS-D077015
CAS No: 120013-84-5
Mol.F.: C24H29NO4
Mol.Wt.: 395.49
Status: Custom Synthesis
Donepezil Open-Ring Keto Acid
CAT No: VS-D077056
CAS No: 197010-25-6
Mol.F.: C24H29NO5
Mol.Wt.: 411.49
Status: Custom Synthesis
Donepezil Pyridine Dehydro Impurity
CAT No: VS-D077016
CAS No: 4803-74-1
Mol.F.: C17H15NO3
Mol.Wt.: 281.31
Status: Custom Synthesis
Donepezil 4-Hydroxy Impurity
CAT No: VS-D077024
CAS No: 197010-22-3
Mol.F.: C24H29NO4
Mol.Wt.: 395.49
Status: Custom Synthesis
Donepezil 5-O-Desmethyl Impurity
CAT No: VS-D077025
CAS No: 120013-57-2
Mol.F.: C23H27NO3
Mol.Wt.: 365.47
Status: Custom Synthesis
Donepezil 6-O-Desmethyl Impurity
CAT No: VS-D077020
CAS No: 120013-56-1
Mol.F.: C23H27NO3
Mol.Wt.: 365.47
Status: Custom Synthesis
Donepezil Pyridine N-Oxide
CAT No: VS-D077023
CAS No: 896134-07-9
Mol.F.: C17H17NO4
Mol.Wt.: 299.32
Status: Custom Synthesis
Hydroxydonepezil
CAT No: VS-D077017
CAS No: 197010-20-1
Mol.F.: C24H29NO4
Mol.Wt.: 395.49
Status: Custom Synthesis
N-Nitroso Donepezil EP Impurity A
CAT No: VS-D077054
CAS No: NA
Mol.F.: C17H22N2O4
Mol.Wt.: 318.4
Status: In Stock
