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Pharmaceutical Reference Standards

Donepezil Hydrochloride

Picture of Donepezil Hydrochloride
CAT No: SZ-D003001
CAS No: 120011-70-3
Mol.F. : C24H29NO3 : HCl
Mol.Wt. : 379.5 : 36.5
Inv. Status: In Stock
SZ-D003001
CAS No:120011-70-3
Mol.F.: C24H29NO3 : HCl
Mol.Wt.: 379.5 : 36.5
Inv. Status: In Stock

Donepezil EP Impurity F

Picture of Donepezil EP Impurity F
CAT No: SZ-D003002
CAS No: 145546-80-1
Mol.F. : C24H27NO3
Mol.Wt. : 377.5
Inv. Status: In Stock
SZ-D003002
CAS No:145546-80-1
Mol.F.: C24H27NO3
Mol.Wt.: 377.5
Inv. Status: In Stock

Donepezil Benzyl Bromide

Picture of Donepezil Benzyl Bromide
CAT No: SZ-D003006
CAS No: 844694-85-5
Mol.F. : C31H36NO3 : Br
Mol.Wt. : 470.6 : 79.9
Inv. Status: In Stock
Rel. CAS No : 845252-34-8 (free base)
SZ-D003006
CAS No:844694-85-5
Mol.F.: C31H36NO3 : Br
Mol.Wt.: 470.6 : 79.9
Inv. Status: In Stock
Rel. CAS No : 845252-34-8 (free base)

Dehydrodeoxy Donepezil

Picture of Dehydrodeoxy Donepezil
CAT No: SZ-D003007
CAS No: 120013-45-8
Mol.F. : C24H29NO2
Mol.Wt. : 363.5
Inv. Status: In Stock
SZ-D003007
CAS No:120013-45-8
Mol.F.: C24H29NO2
Mol.Wt.: 363.5
Inv. Status: In Stock

Deoxy Donepezil

Picture of Deoxy Donepezil
CAT No: SZ-D003008
CAS No: 1034439-57-0
Mol.F. : C24H31NO2 : HCl
Mol.Wt. : 365.5 : 36.5
Inv. Status: In Stock
SZ-D003008
CAS No:1034439-57-0
Mol.F.: C24H31NO2 : HCl
Mol.Wt.: 365.5 : 36.5
Inv. Status: In Stock

Donepezil EP Impurity A

Picture of Donepezil EP Impurity A
CAT No: SZ-D003009
CAS No: 120014-30-4
Mol.F. : C17H23NO3
Mol.Wt. : 289.4
Inv. Status: In Stock
SZ-D003009
CAS No:120014-30-4
Mol.F.: C17H23NO3
Mol.Wt.: 289.4
Inv. Status: In Stock

Donepezil N-Oxide

Picture of Donepezil N-Oxide
CAT No: SZ-D003011
CAS No: 120013-84-5
Mol.F. : C24H29NO4
Mol.Wt. : 395.5
Inv. Status: In Stock
SZ-D003011
CAS No:120013-84-5
Mol.F.: C24H29NO4
Mol.Wt.: 395.5
Inv. Status: In Stock

Donepezil EP Impurity D

Picture of Donepezil EP Impurity D
CAT No: SZ-D003013
CAS No: 4803-57-0
Mol.F. : C17H17NO3
Mol.Wt. : 283.3
Inv. Status: In Stock
SZ-D003013
CAS No:4803-57-0
Mol.F.: C17H17NO3
Mol.Wt.: 283.3
Inv. Status: In Stock

Donepezil Aldehyde Impurity

Picture of Donepezil Aldehyde Impurity
CAT No: SZ-D003014
CAS No: 22065-85-6
Mol.F. : C13H17NO
Mol.Wt. : 203.3
Inv. Status: In Stock
SZ-D003014
CAS No:22065-85-6
Mol.F.: C13H17NO
Mol.Wt.: 203.3
Inv. Status: In Stock

Donepezil Hydroxy Acid Impurity

Picture of Donepezil Hydroxy Acid Impurity
CAT No: SZ-D003015
CAS No: NA
Mol.F. : C24H31NO5
Mol.Wt. : 413.5
Inv. Status: Custom Synthesis
SZ-D003015
CAS No:NA
Mol.F.: C24H31NO5
Mol.Wt.: 413.5
Inv. Status: Custom Synthesis

Donepezil Dihydro Impurity

Picture of Donepezil Dihydro Impurity
CAT No: SZ-D003016
CAS No: 120012-04-6
Mol.F. : C24H31NO3
Mol.Wt. : 381.5
Inv. Status: In Stock
SZ-D003016
CAS No:120012-04-6
Mol.F.: C24H31NO3
Mol.Wt.: 381.5
Inv. Status: In Stock

Donepezil 6-O-Desmethyl Impurity

Picture of Donepezil 6-O-Desmethyl Impurity
CAT No: SZ-D003017
CAS No: 120013-56-1
Mol.F. : C23H27NO3
Mol.Wt. : 365.5
Inv. Status: In Stock
SZ-D003017
CAS No:120013-56-1
Mol.F.: C23H27NO3
Mol.Wt.: 365.5
Inv. Status: In Stock

Donepezil Didesmethyl Impurity

Picture of Donepezil Didesmethyl Impurity
CAT No: SZ-D003018
CAS No: 220170-71-8
Mol.F. : C22H25NO3
Mol.Wt. : 351.4
Inv. Status: Custom Synthesis
SZ-D003018
CAS No:220170-71-8
Mol.F.: C22H25NO3 
Mol.Wt.: 351.4
Inv. Status: Custom Synthesis

Donepezil Pyridine Dehydro N-Oxide

Picture of Donepezil Pyridine Dehydro N-Oxide
CAT No: SZ-D003019
CAS No: 896134-06-8
Mol.F. : C17H15NO4
Mol.Wt. : 297.3
Inv. Status: In Stock
SZ-D003019
CAS No:896134-06-8
Mol.F.: C17H15NO4 
Mol.Wt.: 297.3
Inv. Status: In Stock

Donepezil Pyridine N-Oxide

Picture of Donepezil Pyridine N-Oxide
CAT No: SZ-D003020
CAS No: 896134-07-9
Mol.F. : C17H17NO4
Mol.Wt. : 299.3
Inv. Status: In Stock
SZ-D003020
CAS No:896134-07-9
Mol.F.: C17H17NO4 
Mol.Wt.: 299.3
Inv. Status: In Stock

Donepezil 4-Hydroxy Impurity

Picture of Donepezil 4-Hydroxy Impurity
CAT No: SZ-D003021
CAS No: 197010-22-3
Mol.F. : C24H29NO4
Mol.Wt. : 395.5
Inv. Status: Custom Synthesis
SZ-D003021
CAS No:197010-22-3
Mol.F.: C24H29NO4 
Mol.Wt.: 395.5
Inv. Status: Custom Synthesis

Donepezil 5-O-Desmethyl Impurity

Picture of Donepezil 5-O-Desmethyl Impurity
CAT No: SZ-D003022
CAS No: 120013-57-2
Mol.F. : C23H27NO3
Mol.Wt. : 365.5
Inv. Status: Custom Synthesis
SZ-D003022
CAS No:120013-57-2
Mol.F.: C23H27NO3 
Mol.Wt.: 365.5
Inv. Status: Custom Synthesis

Donepezil EP Impurity B

Picture of Donepezil EP Impurity B
CAT No: SZ-D003024
CAS No: 2107-69-9
Mol.F. : C11H12O3
Mol.Wt. : 192.2
Inv. Status: In Stock
SZ-D003024
CAS No:2107-69-9
Mol.F.: C11H12O3
Mol.Wt.: 192.2
Inv. Status: In Stock

Donepezil Pyridine Dehydro Impurity

Picture of Donepezil Pyridine Dehydro Impurity
CAT No: SZ-D003025
CAS No: 4803-74-1
Mol.F. : C17H15NO3
Mol.Wt. : 281.3
Inv. Status: In Stock
SZ-D003025
CAS No:4803-74-1
Mol.F.: C17H15NO3
Mol.Wt.: 281.3
Inv. Status: In Stock

Donepezil Open Ring Impurity (sodium salt)

Picture of Donepezil Open Ring Impurity (sodium salt)
CAT No: SZ-D003026
CAS No: NA
Mol.F. : C24H28NO5 : Na
Mol.Wt. : 410.5 : 23.0
Inv. Status: In Stock
Rel. CAS No : 197010-25-6 (free base) ; 2217617-87-1 (HCl salt)
SZ-D003026
CAS No:NA
Mol.F.: C24H28NO5 : Na
Mol.Wt.: 410.5 : 23.0
Inv. Status: In Stock
Rel. CAS No : 197010-25-6 (free base) ; 2217617-87-1 (HCl salt)

Donepezil Alkene Pyridine N-Oxide

Picture of Donepezil Alkene Pyridine N-Oxide
CAT No: SZ-D003027
CAS No: 2452407-68-8
Mol.F. : C17H151NO4
Mol.Wt. : 297.3
Inv. Status: Custom Synthesis
SZ-D003027
CAS No:2452407-68-8
Mol.F.: C17H151NO4 
Mol.Wt.: 297.3
Inv. Status: Custom Synthesis

Donepezil Impurity 2

Picture of Donepezil Impurity 2
CAT No: SZ-D003028
CAS No: 36517-91-6
Mol.F. : C11H10O4
Mol.Wt. : 206.2
Inv. Status: In Stock
SZ-D003028
CAS No:36517-91-6
Mol.F.: C11H10O4 
Mol.Wt.: 206.2
Inv. Status: In Stock

3-Keto Donepezil

Picture of 3-Keto Donepezil
CAT No: SZ-D003029
CAS No: 1023500-88-0
Mol.F. : C24H27NO4
Mol.Wt. : 393.5
Inv. Status: In Stock
SZ-D003029
CAS No:1023500-88-0
Mol.F.: C24H27NO4 
Mol.Wt.: 393.5
Inv. Status: In Stock

Donepezil Impurity 4

Picture of Donepezil Impurity 4
CAT No: SZ-D003030
CAS No: 2452407-69-9
Mol.F. : C24H29NO3
Mol.Wt. : 379.5
Inv. Status: Custom Synthesis
SZ-D003030
CAS No:2452407-69-9
Mol.F.: C24H29NO3 
Mol.Wt.: 379.5
Inv. Status: Custom Synthesis

Donepezil EP Impurity E

Picture of Donepezil EP Impurity E
CAT No: SZ-D003031
CAS No: 231283-82-2
Mol.F. : C24H24NO3 : Br
Mol.Wt. : 374.5 : 79.9
Inv. Status: In Stock
Rel. CAS No : 757173-38-9 (free base)
SZ-D003031
CAS No:231283-82-2
Mol.F.: C24H24NO3 : Br
Mol.Wt.: 374.5 : 79.9
Inv. Status: In Stock
Rel. CAS No : 757173-38-9 (free base)

Donepezil O-Benzyl Enol Ether

Picture of Donepezil O-Benzyl Enol Ether
CAT No: SZ-D003032
CAS No: NA
Mol.F. : C31H35NO3
Mol.Wt. : 469.6
Inv. Status: Out of Stock
SZ-D003032
CAS No:NA
Mol.F.: C31H35NO3
Mol.Wt.: 469.6
Inv. Status: Out of Stock

Donepezil Impurity 8

Picture of Donepezil Impurity 8
CAT No: SZ-D003033
CAS No: 1808997-65-0
Mol.F. : C18H23NO4
Mol.Wt. : 317.4
Inv. Status: Custom Synthesis
SZ-D003033
CAS No:1808997-65-0
Mol.F.: C18H23NO4 
Mol.Wt.: 317.4
Inv. Status: Custom Synthesis

Donepezil Impurity 9

Picture of Donepezil Impurity 9
CAT No: SZ-D003034
CAS No: 2452407-71-3
Mol.F. : C26H33NO4
Mol.Wt. : 423.6
Inv. Status: Custom Synthesis
SZ-D003034
CAS No:2452407-71-3
Mol.F.: C26H33NO4 
Mol.Wt.: 423.6
Inv. Status: Custom Synthesis

Donepezil Impurity 11

Picture of Donepezil Impurity 11
CAT No: SZ-D003036
CAS No: 2230493-73-7
Mol.F. : C24H27NO3
Mol.Wt. : 377.5
Inv. Status: Custom Synthesis
SZ-D003036
CAS No:2230493-73-7
Mol.F.: C24H27NO3 
Mol.Wt.: 377.5
Inv. Status: Custom Synthesis

3-keto 2-ene Donepezil

Picture of 3-keto 2-ene Donepezil
CAT No: SZ-D003037
CAS No: NA
Mol.F. : C24H25NO4
Mol.Wt. : 391.5
Inv. Status: Out of Stock
SZ-D003037
CAS No:NA
Mol.F.: C24H25NO4
Mol.Wt.: 391.5
Inv. Status: Out of Stock

Donepezil EP Impurity C

Picture of Donepezil EP Impurity C
CAT No: SZ-D003038
CAS No: 2452407-76-8
Mol.F. : C24H29NO4
Mol.Wt. : 395.5
Inv. Status: Custom Synthesis
SZ-D003038
CAS No:2452407-76-8
Mol.F.: C24H29NO4
Mol.Wt.: 395.5
Inv. Status: Custom Synthesis

Donepezil EP Impurity G

Picture of Donepezil EP Impurity G
CAT No: SZ-D003039
CAS No: 2452407-72-4
Mol.F. : C24H27NO3
Mol.Wt. : 377.5
Inv. Status: Custom Synthesis
SZ-D003039
CAS No:2452407-72-4
Mol.F.: C24H27NO3
Mol.Wt.: 377.5
Inv. Status: Custom Synthesis

Donepezil

Picture of Donepezil
CAT No: SZ-D003040
CAS No: 120014-06-4
Mol.F. : C24H29NO3
Mol.Wt. : 379.5
Inv. Status: In Stock
SZ-D003040
CAS No:120014-06-4
Mol.F.: C24H29NO3
Mol.Wt.: 379.5
Inv. Status: In Stock

Donepezil Impurity 13

Picture of Donepezil Impurity 13
CAT No: SZ-D003041
CAS No: 608511-44-0
Mol.F. : C24H27NO3
Mol.Wt. : 377.5
Inv. Status: In Stock
SZ-D003041
CAS No:608511-44-0
Mol.F.: C24H27NO3
Mol.Wt.: 377.5
Inv. Status: In Stock

Donepezil Impurity 14

Picture of Donepezil Impurity 14
CAT No: SZ-D003042
CAS No: 329010-67-5
Mol.F. : C24H29NO4
Mol.Wt. : 395.5
Inv. Status: Custom Synthesis
SZ-D003042
CAS No:329010-67-5
Mol.F.: C24H29NO4
Mol.Wt.: 395.5
Inv. Status: Custom Synthesis

Donepezil Impurity 15

Picture of Donepezil Impurity 15
CAT No: SZ-D003043
CAS No: NA
Mol.F. : C17H23NO3
Mol.Wt. : 289.4
Inv. Status: Custom Synthesis
SZ-D003043
CAS No:NA
Mol.F.: C17H23NO3
Mol.Wt.: 289.4
Inv. Status: Custom Synthesis

Donepezil Impurity 16

Picture of Donepezil Impurity 16
CAT No: SZ-D003044
CAS No: 1034439-43-4
Mol.F. : C17H25NO2 : HCl
Mol.Wt. : 275.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 844694-83-3 (free base)
SZ-D003044
CAS No:1034439-43-4
Mol.F.: C17H25NO2 : HCl
Mol.Wt.: 275.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 844694-83-3 (free base)

Donepezil EP Impurity A (HCl)

Picture of Donepezil EP Impurity A (HCl)
CAT No: SZ-D003045
CAS No: 120013-39-0
Mol.F. : C17H23NO3 : HCl
Mol.Wt. : 289.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 120014-30-4 (free base)
SZ-D003045
CAS No:120013-39-0
Mol.F.: C17H23NO3 : HCl
Mol.Wt.: 289.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 120014-30-4 (free base)

Donepezil Impurity 17

Picture of Donepezil Impurity 17
CAT No: SZ-D003046
CAS No: 171723-80-1
Mol.F. : C25H26N2O2
Mol.Wt. : 386.5
Inv. Status: Custom Synthesis
Rel. CAS No : 171722-90-0 (HCl salt)
SZ-D003046
CAS No:171723-80-1
Mol.F.: C25H26N2O2
Mol.Wt.: 386.5
Inv. Status: Custom Synthesis
Rel. CAS No : 171722-90-0 (HCl salt)

Donepezil Impurity 18

Picture of Donepezil Impurity 18
CAT No: SZ-D003047
CAS No: 110406-97-8
Mol.F. : C11H15ClO2
Mol.Wt. : 214.7
Inv. Status: Custom Synthesis
SZ-D003047
CAS No:110406-97-8
Mol.F.: C11H15ClO2
Mol.Wt.: 214.7
Inv. Status: Custom Synthesis

Donepezil Impurity 19

Picture of Donepezil Impurity 19
CAT No: SZ-D003048
CAS No: 50786-50-0
Mol.F. : C11H15ClO3
Mol.Wt. : 230.7
Inv. Status: Custom Synthesis
SZ-D003048
CAS No:50786-50-0
Mol.F.: C11H15ClO3
Mol.Wt.: 230.7
Inv. Status: Custom Synthesis

Donepezil Impurity 21

Picture of Donepezil Impurity 21
CAT No: SZ-D003051
CAS No: 4693-38-3
Mol.F. : C11H13ClO3
Mol.Wt. : 228.7
Inv. Status: Custom Synthesis
SZ-D003051
CAS No:4693-38-3
Mol.F.: C11H13ClO3
Mol.Wt.: 228.7
Inv. Status: Custom Synthesis

Donepezil Hydrochloride Monohydrate

Picture of Donepezil Hydrochloride Monohydrate
CAT No: SZ-D003052
CAS No: 884740-09-4
Mol.F. : C24H29NO3 : HCl : H2O
Mol.Wt. : 379.5 : 36.5 : 18.0
Inv. Status: Custom Synthesis
Rel. CAS No : 120014-06-4 (free base) ; 120011-70-3 (HCl salt) ; 794512-61-1 (HBr salt)
SZ-D003052
CAS No:884740-09-4
Mol.F.: C24H29NO3 : HCl : H2O
Mol.Wt.: 379.5 : 36.5 : 18.0
Inv. Status: Custom Synthesis
Rel. CAS No : 120014-06-4 (free base) ; 120011-70-3 (HCl salt) ; 794512-61-1 (HBr salt)

Donepezil Impurity 22

Picture of Donepezil Impurity 22
CAT No: SZ-D003053
CAS No: NA
Mol.F. : C18H17NO3
Mol.Wt. : 295.3
Inv. Status: Custom Synthesis
SZ-D003053
CAS No:NA
Mol.F.: C18H17NO3
Mol.Wt.: 295.3
Inv. Status: Custom Synthesis

Donepezil Impurity 23

Picture of Donepezil Impurity 23
CAT No: SZ-D003055
CAS No: 67686-01-5
Mol.F. : C13H19NO
Mol.Wt. : 205.3
Inv. Status: Custom Synthesis
Rel. CAS No : 121183-26-4 (HCl salt)
SZ-D003055
CAS No:67686-01-5
Mol.F.: C13H19NO
Mol.Wt.: 205.3
Inv. Status: Custom Synthesis
Rel. CAS No : 121183-26-4 (HCl salt)

Donepezil Impurity 24

Picture of Donepezil Impurity 24
CAT No: SZ-D003056
CAS No: 2905-56-8
Mol.F. : C12H17N
Mol.Wt. : 175.3
Inv. Status: Custom Synthesis
SZ-D003056
CAS No:2905-56-8
Mol.F.: C12H17N
Mol.Wt.: 175.3
Inv. Status: Custom Synthesis

Donepezil Impurity 25

Picture of Donepezil Impurity 25
CAT No: SZ-D003057
CAS No: 24228-40-8
Mol.F. : C15H21NO2
Mol.Wt. : 247.3
Inv. Status: Custom Synthesis
Rel. CAS No : 111627-24-8 (HCl salt)
SZ-D003057
CAS No:24228-40-8
Mol.F.: C15H21NO2
Mol.Wt.: 247.3
Inv. Status: Custom Synthesis
Rel. CAS No : 111627-24-8 (HCl salt)

Donepezil Impurity 26

Picture of Donepezil Impurity 26
CAT No: SZ-D003058
CAS No: NA
Mol.F. : C17H28N2
Mol.Wt. : 260.4
Inv. Status: Custom Synthesis
SZ-D003058
CAS No:NA
Mol.F.: C17H28N2
Mol.Wt.: 260.4
Inv. Status: Custom Synthesis

Donepezil Open Ring Impurity

Picture of Donepezil Open Ring Impurity
CAT No: SZ-D003059
CAS No: 197010-25-6
Mol.F. : C24H29NO5
Mol.Wt. : 411.5
Inv. Status: Custom Synthesis
Rel. CAS No : 2217617-87-1 (HCl salt)
SZ-D003059
CAS No:197010-25-6
Mol.F.: C24H29NO5
Mol.Wt.: 411.5
Inv. Status: Custom Synthesis
Rel. CAS No : 2217617-87-1 (HCl salt)

Stable Isotopes And Metabolites

Donepezil-d4

Picture of Donepezil-d4
CAT No: SZ-D003D02
CAS No: 1219908-72-1
Mol.F. : C24H25D4NO3
Mol.Wt. : 383.5
Inv. Status: Custom Synthesis
SZ-D003D02
CAS No:1219908-72-1
Mol.F.: C24H25D4NO3
Mol.Wt.: 383.5
Inv. Status: Custom Synthesis

Donepezil-d5

Picture of Donepezil-d5
CAT No: SZ-D003D03
CAS No: 1128086-25-8
Mol.F. : C24H24D5NO3
Mol.Wt. : 384.5
Inv. Status: Custom Synthesis
SZ-D003D03
CAS No:1128086-25-8
Mol.F.: C24H24D5NO3
Mol.Wt.: 384.5
Inv. Status: Custom Synthesis

Donepezil D6

Picture of Donepezil D6
CAT No: SZ-D003D04
CAS No: 1207959-41-8
Mol.F. : C24H23D6NO3
Mol.Wt. : 385.5
Inv. Status: Custom Synthesis
SZ-D003D04
CAS No:1207959-41-8
Mol.F.: C24H23D6NO3
Mol.Wt.: 385.5
Inv. Status: Custom Synthesis

Donepezil D7

Picture of Donepezil D7
CAT No: SZ-D003D05
CAS No: 1215071-00-3
Mol.F. : C24H22D7NO3
Mol.Wt. : 386.5
Inv. Status: Custom Synthesis
SZ-D003D05
CAS No:1215071-00-3
Mol.F.: C24H22D7NO3
Mol.Wt.: 386.5
Inv. Status: Custom Synthesis

6-O-Desmethyl Donepezil D5

Picture of 6-O-Desmethyl Donepezil D5
CAT No: SZ-D003D06
CAS No: 1189443-74-0
Mol.F. : C23H22D5NO3
Mol.Wt. : 370.5
Inv. Status: Custom Synthesis
SZ-D003D06
CAS No:1189443-74-0
Mol.F.: C23H22D5NO3
Mol.Wt.: 370.5
Inv. Status: Custom Synthesis

Donepezil N-Oxide D6

Picture of Donepezil N-Oxide D6
CAT No: SZ-D003D07
CAS No: NA
Mol.F. : C24H23D6NO4
Mol.Wt. : 401.5
Inv. Status: Custom Synthesis
SZ-D003D07
CAS No:NA
Mol.F.: C24H23D6NO4
Mol.Wt.: 401.5
Inv. Status: Custom Synthesis

Donepezil N-Oxide D7

Picture of Donepezil N-Oxide D7
CAT No: SZ-D003D08
CAS No: NA
Mol.F. : C24H22D7NO4
Mol.Wt. : 402.5
Inv. Status: Custom Synthesis
SZ-D003D08
CAS No:NA
Mol.F.: C24H22D7NO4
Mol.Wt.: 402.5
Inv. Status: Custom Synthesis

Possible Nitroso Standards

N-Nitroso Donepezil EP Impurity A

Picture of N-Nitroso Donepezil EP Impurity A
CAT No: SZ-D003050
CAS No: NA
Mol.F. : C17H22N2O4
Mol.Wt. : 318.4
Inv. Status: In Stock
SZ-D003050
CAS No:NA
Mol.F.: C17H22N2O4
Mol.Wt.: 318.4
Inv. Status: In Stock