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Pharmaceutical Reference Standards / Impurity Standards

Donepezil Hydrochloride

Donepezil Hydrochloride

CAT. No.D040000
CAS. No.120011-70-3
Mol. F.C24H29NO3.HCl
Mol. W.415.95 g/mol
Stock Status:Instock

Donepezil Hydrochloride Monohydrate

Donepezil Hydrochloride Monohydrate

CAT. No.D040000B
CAS. No.884740-09-4
Mol. F.C24H29NO3·HCl·H2O
Mol. W.433.97 g/mol
Stock Status:Instock

Deoxy Donepezil Hydrochloride

Deoxy Donepezil Hydrochloride

CAT. No.D040001
CAS. No.1034439-57-0
Mol. F.C24H32ClNO2
Mol. W.401.97 g/mol
Stock Status:Instock

Deoxy Donapezil

Deoxy Donapezil

CAT. No.D040001A
CAS. No.844694-84-4
Mol. F.C24H31NO2
Mol. W.365.51 g/mol
Stock Status:Instock

Donepezil Dehydrodeoxy Impurity

Donepezil Dehydrodeoxy Impurity

CAT. No.D040002
CAS. No.120013-45-8
Mol. F.C24H29NO2
Mol. W.363.49 g/mol
Stock Status:Instock

Donepezil Impurity B Hydrochloride Salt

Donepezil Impurity B Hydrochloride Salt

CAT. No.D040003
CAS. No.120013-39-0
Mol. F.C17H24ClNO3
Mol. W.325.83 g/mol
Stock Status:Instock

5-O-Desmethyl Donepezil

5-O-Desmethyl Donepezil

CAT. No.D040004
CAS. No.120013-57-2
Mol. F.C23H27NO3
Mol. W.365.47 g/mol
Stock Status:Instock

Donapezile N-Oxide

Donapezile N-Oxide

CAT. No.D040005
CAS. No.120013-84-5
Mol. F.C24H29NO4
Mol. W.395.49 g/mol
Stock Status:Instock

6-O-Desmethyl Donepezil

6-O-Desmethyl Donepezil

CAT. No.D040006
CAS. No.120013-56-1
Mol. F.C23H27NO3
Mol. W.365.47 g/mol
Stock Status:Instock

Donepezil Impurity (USP Imp b)(5,6-Dimethoxy-2-(4-pyridylmethyl)-1-indanone)(Pyridine Analog)

Donepezil Impurity (USP Imp b)(5,6-Dimethoxy-2-(4-pyridylmethyl)-1-indanone)(Pyridine Analog)

CAT. No.D040007
CAS. No.4803-57-0
Mol. F.C17H17NO3
Mol. W.283.32 g/mol
Stock Status:Instock

Donepezil Impurity

Donepezil Impurity

CAT. No.D040008
CAS. No.149874-91-9
Mol. F.C17H21NO3
Mol. W.287.35 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity

Donepezil Impurity

CAT. No.D040009
CAS. No.844694-83-3
Mol. F.C17H25NO2
Mol. W.275.39 g/mol
Stock Status:Custom Synthesis

Donepezil EP Impurity B

Donepezil EP Impurity B

CAT. No.D040010
CAS. No.2107-69-9
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Instock

Donepezil Open Ring Impurity (2-(3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic Acid)

Donepezil Open Ring Impurity (2-(3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic Acid)

CAT. No.D040011
CAS. No.197010-25-6
Mol. F.C24H29NO5
Mol. W.411.49 g/mol
Stock Status:Limited Stock

Donepezil Open Ring Impurity Sodium Salt

Donepezil Open Ring Impurity Sodium Salt

CAT. No.D040011A
CAS. No.197010-25-6 (free base)
Mol. F.C24H28NO5.Na
Mol. W.433.47 g/mol
Stock Status:Instock

Donepezil Benzyl Bromide

Donepezil Benzyl Bromide

CAT. No.D040013
CAS. No.844694-85-5
Mol. F.C31H36BrNO3
Mol. W.550.53 g/mol
Stock Status:Instock

Donepezil Benzyl Chloride

Donepezil Benzyl Chloride

CAT. No.D040013A
CAS. No.937362-16-8
Mol. F.C31H36ClNO3
Mol. W.506.07 g/mol
Stock Status:Instock

Donepezil benzyl

Donepezil benzyl

CAT. No.D040013B
CAS. No.937362-16-8
Mol. F.C31H36ClNO3
Mol. W.506.07 g/mol
Stock Status:Custom Synthesis

Hydroxy Donapezil

Hydroxy Donapezil

CAT. No.D040014
CAS. No.197010-20-1
Mol. F.C24H29NO4
Mol. W.395.49 g/mol
Stock Status:Instock

Donepezil (base)

Donepezil (base)

CAT. No.D040015
CAS. No.120014-06-4
Mol. F.C24H29NO3
Mol. W.379.45 g/mol
Stock Status:Instock

Donapezile Impurity-A(IH)

Donapezile Impurity-A(IH)

CAT. No.D040017
CAS. No.NA
Mol. F.NA
Mol. W.NA
Stock Status:Custom Synthesis

Donapezile Impurity-B(IH)(Impurity I)

Donapezile Impurity-B(IH)(Impurity I)

CAT. No.D040018
CAS. No.NA
Mol. F.NA
Mol. W.NA
Stock Status:Custom Synthesis

Donapezile Impurity-C(IH)

Donapezile Impurity-C(IH)

CAT. No.D040019
CAS. No.NA
Mol. F.NA
Mol. W.NA
Stock Status:Custom Synthesis

2-((1-benzyl-1,2,3,6-tetrahydropyridin-4-yl)methyl)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one

2-((1-benzyl-1,2,3,6-tetrahydropyridin-4-yl)methyl)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one

CAT. No.D040020
CAS. No.NA
Mol. F.C24H27NO3
Mol. W.377.48 g/mol
Stock Status:Custom Synthesis

Donepezil EP Impurity F

Donepezil EP Impurity F

CAT. No.D040021
CAS. No.145546-80-1
Mol. F.C24H27NO3
Mol. W.377.48 g/mol
Stock Status:Instock

Donapezile unknown Impurity

Donapezile unknown Impurity

CAT. No.D040022
CAS. No.NA
Mol. F.C18H23NO3
Mol. W.301.17 g/mol
Stock Status:Custom Synthesis

4-((5,6-dimethoxy-1-oxo-1,3-dihydro-2H-inden-2-ylidene)methyl)pyridine 1-oxide

4-((5,6-dimethoxy-1-oxo-1,3-dihydro-2H-inden-2-ylidene)methyl)pyridine 1-oxide

CAT. No.D040023
CAS. No.896134-06-8
Mol. F.C17H15NO4
Mol. W.297.31 g/mol
Stock Status:Instock

3-Hydroxy Donepezil

3-Hydroxy Donepezil

CAT. No.D040024
CAS. No.2097683-67-3
Mol. F.C24H29NO4
Mol. W.395.50 g/mol
Stock Status:Limited Stock

3-Hydroxy Donepezil Hydrochloride

3-Hydroxy Donepezil Hydrochloride

CAT. No.D040024A
CAS. No.NA
Mol. F.C24H29NO4.HCl
Mol. W.431.95 g/mol
Stock Status:Instock

Donepezil O-Benzyl Enol Ether

Donepezil O-Benzyl Enol Ether

CAT. No.D040025
CAS. No.NA
Mol. F.C31H35NO3
Mol. W.469.61 g/mol
Stock Status:Custom Synthesis

4,5-Dimethoxy-1-indanone

4,5-Dimethoxy-1-indanone

CAT. No.D040026
CAS. No. 6342-80-9
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Custom Synthesis

4,6-dimethoxy-2,3-dihydroinden-1-one

4,6-dimethoxy-2,3-dihydroinden-1-one

CAT. No.D040027
CAS. No.13336-32-8
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Custom Synthesis

4,7-Dimethoxy-1-indanone

4,7-Dimethoxy-1-indanone

CAT. No.D040028
CAS. No. 52428-09-8
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Custom Synthesis

5,7-Dimethoxyindan-1-one

5,7-Dimethoxyindan-1-one

CAT. No.D040029
CAS. No. 880-87-5
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Custom Synthesis

6,7-Dimethoxyindan-1-one

6,7-Dimethoxyindan-1-one

CAT. No.D040030
CAS. No.57441-74-4
Mol. F.C11H12O3
Mol. W.192.21 g/mol
Stock Status:Custom Synthesis

Donepezil-4-hydroxy

Donepezil-4-hydroxy

CAT. No.D040031
CAS. No.197010-22-3
Mol. F.C24H29NO4
Mol. W.395.49 g/mol
Stock Status:Custom Synthesis

Donepezil impurity C

Donepezil impurity C

CAT. No.D040032
CAS. No.NA
Mol. F.C31H35NO3
Mol. W.469.61 g/mol
Stock Status:Custom Synthesis

5,6-Dimethyl-1-indanone

5,6-Dimethyl-1-indanone

CAT. No.D040033
CAS. No.16440-97-4
Mol. F.C11H12O
Mol. W.160.21 g/mol
Stock Status:Custom Synthesis

2-Chloro-1-(2-thienyl)ethanone

2-Chloro-1-(2-thienyl)ethanone

CAT. No.D040034
CAS. No.29683-77-0
Mol. F.C6H5ClOS
Mol. W.160.62 g/mol
Stock Status:Custom Synthesis

Donepezil Alkene Pyridine N-oxide

Donepezil Alkene Pyridine N-oxide

CAT. No.D040036
CAS. No.2452407-68-8
Mol. F.C17H15NO4
Mol. W.299.32 g/mol
Stock Status:Instock

Donepezil Impurity 13

Donepezil Impurity 13

CAT. No.D040037
CAS. No.608511-44-0
Mol. F.C24H27NO3
Mol. W.377.48 g/mol
Stock Status:Instock

2,3-Dihydro-5,6-dimethoxy-2-[(1-oxido-4-pyridinyl)methylene]-1H-inden-1-one

2,3-Dihydro-5,6-dimethoxy-2-[(1-oxido-4-pyridinyl)methylene]-1H-inden-1-one

CAT. No.D040038
CAS. No.896134-06-8
Mol. F.C17H15NO4
Mol. W.297.31 g/mol
Stock Status:Instock

Donepezil Dihydro Impurity

Donepezil Dihydro Impurity

CAT. No.D040039
CAS. No.120012-04-6
Mol. F.C24H31NO3
Mol. W.381.52 g/mol
Stock Status:Instock

1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-yl)methylene-1,2,3,4-tetrahydropyridine

1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-yl)methylene-1,2,3,4-tetrahydropyridine

CAT. No.D040040
CAS. No.1020661-51-1
Mol. F.C24H25NO3
Mol. W.375.46 g/mol
Stock Status:Instock

Donepezil Impurity E Bromide Salt

Donepezil Impurity E Bromide Salt

CAT. No.D040041
CAS. No.231283-82-2
Mol. F.C24H24BrNO3
Mol. W.454.36 g/mol
Stock Status:Instock

Dehydro Donepezil(E/Z mixture)

Dehydro Donepezil(E/Z mixture)

CAT. No.D040042
CAS. No.120014-07-5
Mol. F.C24H27NO3
Mol. W.377.49 g/mol
Stock Status:Custom Synthesis

Donepezil EP Impurity A

Donepezil EP Impurity A

CAT. No.D040043
CAS. No.120014-30-4
Mol. F.C17H23NO3
Mol. W.289.37 g/mol
Stock Status:Instock

Donepezil EP Impurity E

Donepezil EP Impurity E

CAT. No.D040044
CAS. No.231283-82-2
Mol. F.C24H24BrNO3
Mol. W.454.36 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity EP impuirty G

Donepezil Impurity EP impuirty G

CAT. No.D040045
CAS. No.2452407-72-4
Mol. F.C24H27NO3
Mol. W.377.48 g/mol
Stock Status:Instock

Donepezil Impurity 14

Donepezil Impurity 14

CAT. No.D040046
CAS. No.NA
Mol. F.C24H29NO4
Mol. W.395.49 g/mol
Stock Status:Instock

Donepezil Pyridine Dehydro Impurity

Donepezil Pyridine Dehydro Impurity

CAT. No.D040047
CAS. No.4803-74-1
Mol. F.C17H15NO3
Mol. W.281.31 g/mol
Stock Status:Custom Synthesis

Donepezil EP Impurity C

Donepezil EP Impurity C

CAT. No.D040048
CAS. No.2452407-76-8
Mol. F.C24H29NO4
Mol. W.395.49 g/mol
Stock Status:Limited Stock

5,6-Dimethoxy-2-[(4-piperidyl)methyl]indane hydrochloride

5,6-Dimethoxy-2-[(4-piperidyl)methyl]indane hydrochloride

CAT. No.D040049
CAS. No.1034439-43-4
Mol. F.C17H25NO2.HCl
Mol. W.311.85 g/mol
Stock Status:Custom Synthesis

Donepezil deoxy impurity

Donepezil deoxy impurity

CAT. No.D040050
CAS. No.844694-84-4
Mol. F.C24H31NO2
Mol. W.365.51 g/mol
Stock Status:Custom Synthesis

5,6-dimethoxy-2-(1,2,3,6-tetrahydropyridin-4ylmethyl)-2,3-dihydro-1H-inden-1ol

5,6-dimethoxy-2-(1,2,3,6-tetrahydropyridin-4ylmethyl)-2,3-dihydro-1H-inden-1ol

CAT. No.D040051
CAS. No.NA
Mol. F.C17H23NO3
Mol. W.289.37 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity G Hydrochloride

Donepezil Impurity G Hydrochloride

CAT. No.D040052
CAS. No.NA
Mol. F.C24H27NO3.HCl
Mol. W.413.94 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity 18

Donepezil Impurity 18

CAT. No.D040053
CAS. No.110406-97-8
Mol. F.C11H15ClO2
Mol. W.214.69 g/mol
Stock Status:Custom Synthesis

alpha-(2-chloroethyl)-3,4-dimethoxybenzenemethanol

alpha-(2-chloroethyl)-3,4-dimethoxybenzenemethanol

CAT. No.D040054
CAS. No.NA
Mol. F.C11H15ClO3
Mol. W.23.69 g/mol
Stock Status:Custom Synthesis

1,2-dimethoxy-4-propylbenzene

1,2-dimethoxy-4-propylbenzene

CAT. No.D040055
CAS. No.5888-52-8
Mol. F.C11H16O2
Mol. W.180.24 g/mol
Stock Status:Custom Synthesis

1-(3,4-Dimethoxyphenyl)-3-hydroxypropan-1-one

1-(3,4-Dimethoxyphenyl)-3-hydroxypropan-1-one

CAT. No.D040056
CAS. No.104397-78-6
Mol. F.C11H14O4
Mol. W.21.23 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity 21

Donepezil Impurity 21

CAT. No.D040057
CAS. No.4693-38-3
Mol. F.C11H13ClO3
Mol. W.228.67 g/mol
Stock Status:Custom Synthesis

5,6-dimethoxy-2-((6-methylpyridin-2-yl)methylene)-2,3-dihydro-1H-inden-1-one

5,6-dimethoxy-2-((6-methylpyridin-2-yl)methylene)-2,3-dihydro-1H-inden-1-one

CAT. No.D040058
CAS. No.NA
Mol. F.C18H17NO3
Mol. W.295.33 g/mol
Stock Status:Custom Synthesis

N-Nitroso Donepezil EP Impurity A

N-Nitroso Donepezil EP Impurity A

CAT. No.D040059
CAS. No.NA
Mol. F.C17H22N2O4
Mol. W.318.37 g/mol
Stock Status:Instock

Donepezil Impurity C Hydrochloride Salt

Donepezil Impurity C Hydrochloride Salt

CAT. No.D040060
CAS. No.NA
Mol. F.C31H36ClNO3
Mol. W.506.08 g/mol
Stock Status:Instock

Donepezil Pyridine N-Oxide

Donepezil Pyridine N-Oxide

CAT. No.D040063
CAS. No.896134-07-9
Mol. F.C17H17NO4
Mol. W.299.32 g/mol
Stock Status:Custom Synthesis

Donepezil Hydrochloride Form-I

Donepezil Hydrochloride Form-I

CAT. No.D040064
CAS. No.120011-70-3
Mol. F.C24H30ClNO3
Mol. W.415.95 g/mol
Stock Status:Custom Synthesis

Donepezil Impurity 27

Donepezil Impurity 27

CAT. No.D040065
CAS. No.923571-15-7
Mol. F.C17H15NO4
Mol. W.297.31 g/mol
Stock Status:Custom Synthesis

(R)-Donepezil

(R)-Donepezil

CAT. No.D040066
CAS. No.142698-19-9
Mol. F.C24H29NO3
Mol. W.379.49 g/mol
Stock Status:Custom Synthesis

Metabolites

6-O-Desmethyl Donepezil Hydrochloride

6-O-Desmethyl Donepezil Hydrochloride

CAT. No.D040061
CAS. No.852285-82-6
Mol. F.C23H28ClNO3
Mol. W.401.93 g/mol
Stock Status:Custom Synthesis

Isotope Labelled Compounds

Donepezil-d4 Hydrochloride

Donepezil-d4 Hydrochloride

CAT. No.D040016
CAS. No.1219798-88-5
Mol. F.C24H25D4NO3.HCl
Mol. W.419.98 g/mol
Stock Status:Instock

Donepezil-D7 Hydrochloride

Donepezil-D7 Hydrochloride

CAT. No.D040035
CAS. No.1261394-20-0
Mol. F.C24H23D7ClNO3
Mol. W.423.00 g/mol
Stock Status:Instock

6-O-Desmethyl Donepezil Hydrochloride -D5

6-O-Desmethyl Donepezil Hydrochloride -D5

CAT. No.D040062
CAS. No.NA
Mol. F.C23H23D5ClNO3
Mol. W.406.96 g/mol
Stock Status:Custom Synthesis