Carbidopa-impurities | Pharmaffiliates

carbidopa and its Impurities

Carbidopa is used with another medicine called levodopa to treat the symptoms of Parkinson's disease. The pharmacologic objective is to get an exogenous dopamine-precursor known as levodopa/L-DOPA into the dopamine-deficient brains of PD patients.. Reference standards of Carbidopa API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 52 results for carbidopa Impurities
PA 30 14000

Carbidopa - API

Carbidopa


  • Catalogue No.:PA 30 14000

  • CAS :

    38821-49-7

  • Molecular Formula : C10H16N2O5

  • Molecular Weight : 244.24

PA 30 14010

Carbidopa - Impurity A

L-Methyldopa


  • Catalogue No.:PA 30 14010

  • CAS :

    555-30-6

  • Molecular Formula : C10H13NO4

  • Molecular Weight : 211.21

PA 30 14020

Carbidopa - Impurity B

Methyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)-2-methylpropanoate


  • Catalogue No.:PA 30 14020

  • CAS :

    NA

  • Molecular Formula : C11H15NO4

  • Molecular Weight : 225.24

PA 30 14030

3-O-Methyl Carbidopa (Mixture)

3-O-Methyl Carbidopa (Mixture)


  • Catalogue No.:PA 30 14030

  • CAS :

    85933-19-3

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA 30 14040

Carbidopa - Impurity D

Cyclohexylidene Carbidopa Methyl Ester


  • Catalogue No.:PA 30 14040

  • CAS :

    934371-48-9

  • Molecular Formula : C17H24N2O4

  • Molecular Weight : 320.38

PA 30 14050

Carbidopa - Impurity E

(S)-Carbidopa Methyl Ester


  • Catalogue No.:PA 30 14050

  • CAS :

    52514-63-3

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA 30 14060

Carbidopa - Impurity F

Ethyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazino-2-methylpropanoate


  • Catalogue No.:PA 30 14060

  • CAS :

    1458640-32-8

  • Molecular Formula : C12H18N2O4

  • Molecular Weight : 254.28

PA 30 14080

Carbidopa - Impurity H

(2S)-2-Hydrazino-3-(3-hydroxy-4-methoxyphenyl)-2-methylpropanoic Acid


  • Catalogue No.:PA 30 14080

  • CAS :

    1361017-74-4

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA 30 14090

Carbidopa - Impurity I

(2S)-3-(3-Bromo-4,5-dihydroxyphenyl)-2-hydrazino-2-methylpropanoic Acid


  • Catalogue No.:PA 30 14090

  • CAS :

    1246819-09-9

  • Molecular Formula : C10H13BrN2O4

  • Molecular Weight : 305.13

PA 30 14100

Carbidopa - Impurity J

2-Bromo (S)-Carbidopa


  • Catalogue No.:PA 30 14100

  • CAS :

    43197-33-7

  • Molecular Formula : C10H13BrN2O4

  • Molecular Weight : 305.13

PA 30 14510

Carbidopa - Impurity G

3',4'-Dihydroxyphenylacetone


  • Catalogue No.:PA 30 14510

  • CAS :

    2503-44-8

  • Molecular Formula : C9H10O3

  • Molecular Weight : 166.17

PA 30 14520

3-(3,4-Dihydroxyphenyl)-2-methylpropanoic Acid

3-(3,4-Dihydroxyphenyl)-2-methylpropanoic Acid


  • Catalogue No.:PA 30 14520

  • CAS :

    53832-94-3

  • Molecular Formula : C10H12O4

  • Molecular Weight : 196.2

PA 30 14530

2-Bromo Carbidopa

2-Bromo Carbidopa


  • Catalogue No.:PA 30 14530

  • CAS :

    1246817-47-9

  • Molecular Formula : C10H13BrN2O4

  • Molecular Weight : 305.13

PA 30 14540

4-O-Methylcarbidopa

4-O-Methylcarbidopa


  • Catalogue No.:PA 30 14540

  • CAS :

    NA

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA STI 017491

Carbidopa-d3

Carbidopa-d3


  • Catalogue No.:PA STI 017491

  • CAS :

    1276732-89-8

  • Molecular Formula : C10H11D3N2O4

  • Molecular Weight : 229.25

PA STI 017492

(S)-(-)-Carbidopa-d3 Monohydrate

(S)-(-)-Carbidopa-d3 Monohydrate


  • Catalogue No.:PA STI 017492

  • CAS :

    NA

  • Molecular Formula : C10H13D3N2O5

  • Molecular Weight : 247.26

PA STI 017500

D,L-Carbidopa-d5

D,L-Carbidopa-d5


  • Catalogue No.:PA STI 017500

  • CAS :

    1185134-76-2

  • Molecular Formula : C10H9D5N2O4

  • Molecular Weight : 231.26

PA STI 017530

(S)-(-)-Carbidopa-d5

(S)-(-)-Carbidopa-d5


  • Catalogue No.:PA STI 017530

  • CAS :

    1426174-03-9

  • Molecular Formula : C10H9D5N2O4

  • Molecular Weight : 231.26

PA STI 017540

R-(+)-Carbidopa-d5

R-(+)-Carbidopa-d5


  • Catalogue No.:PA STI 017540

  • CAS :

    NA

  • Molecular Formula : C10H9D5N2O4

  • Molecular Weight : 231.13

PA STI 060910

3-O-Methyl Carbidopa-d5

3-O-Methyl Carbidopa-d5


  • Catalogue No.:PA STI 060910

  • CAS :

    1794810-91-5

  • Molecular Formula : C11H11D5N2O4

  • Molecular Weight : 245.29

PA USP1095506

Carbidopa (1095506)

Carbidopa (1095506)


  • Catalogue No.:PA USP1095506

  • CAS :

    38821-49-7

  • Molecular Formula : NA

  • Molecular Weight : NA

PA BP60RB

carbidopa (60RB)

carbidopa (60RB)


  • Catalogue No.:PA BP60RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPC0460000

Carbidopa (C0460000)

Carbidopa (C0460000)


  • Catalogue No.:PA EPC0460000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA ICRS2132

Carbidopa (ICRS2132)


  • Catalogue No.:PA ICRS2132

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1095517

Carbidopa Related Compound A (3-O-Methylcarbidopa) (1095517)

Carbidopa Related Compound A (3-O-Methylcarbidopa) (1095517)


  • Catalogue No.:PA USP1095517

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPY0001713

Carbidopa for system suitability (Y0001713)

Carbidopa for system suitability (Y0001713)


  • Catalogue No.:PA EPY0001713

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPY0001716

Carbidopa impurity mixture (Y0001716)

Carbidopa impurity mixture (Y0001716)


  • Catalogue No.:PA EPY0001716

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA JP0033

Carbidopa (JP 0033)

Carbidopa (JP 0033)


  • Catalogue No.:PA JP0033

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA IPIPRS 127 12

Carbidopa (IPRS/127/12)-from IPC


  • Catalogue No.:PA IPIPRS 127 12

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA 30 14550

3-(3,4-Dimethoxyphenyl)-2-hydrazinyl-2-methylpropanoic Acid

3-(3,4-Dimethoxyphenyl)-2-hydrazinyl-2-methylpropanoic Acid


  • Catalogue No.:PA 30 14550

  • CAS :

    28860-96-0

  • Molecular Formula : C12H18N2O4

  • Molecular Weight : 254.29

PA 30 14560

N-(Aminocarbonyl)-3-methoxy-O-α-dimethyl-L-tyrosine

N-(Aminocarbonyl)-3-methoxy-O-α-dimethyl-L-tyrosine


  • Catalogue No.:PA 30 14560

  • CAS :

    28861-00-9

  • Molecular Formula : C13H18N2O5

  • Molecular Weight : 282.3

PA 30 14570

(S)-(-)-Carbidopa

(S)-(-)-Carbidopa


  • Catalogue No.:PA 30 14570

  • CAS :

    28860-95-9

  • Molecular Formula : C10H14N2O4

  • Molecular Weight : 226.23

PA 30 14580

(S)-2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile Hydrochloride

(S)-2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile Hydrochloride


  • Catalogue No.:PA 30 14580

  • CAS :

    2544-13-0

  • Molecular Formula : C12H17ClN2O2

  • Molecular Weight : 256.73

PA 30 14590

(S)-2-Amino-3-(3-hydroxy-4-methoxyphenyl)-2-methylpropanoic Acid

(S)-2-Amino-3-(3-hydroxy-4-methoxyphenyl)-2-methylpropanoic Acid


  • Catalogue No.:PA 30 14590

  • CAS :

    NA

  • Molecular Formula : C11H15NO4

  • Molecular Weight : 225.24

PAI 03 037010

Methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3,4-dihydroxyphenyl)-2-methylpropanoate

Methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3,4-dihydroxyphenyl)-2-methylpropanoate


  • Catalogue No.:PAI 03 037010

  • CAS :

    NA

  • Molecular Formula : C16H23NO6

  • Molecular Weight : 325.36

PAI 03 037020

Methyl (S)-3-(3-bromo-4,5-dihydroxyphenyl)-2-((tert-butoxycarbonyl)amino)-2-methylpropanoate

Methyl (S)-3-(3-bromo-4,5-dihydroxyphenyl)-2-((tert-butoxycarbonyl)amino)-2-methylpropanoate


  • Catalogue No.:PAI 03 037020

  • CAS :

    NA

  • Molecular Formula : C16H22BrNO6

  • Molecular Weight : 404.26

PAI 03 037030

Methyl (S)-2-amino-3-(3-bromo-4,5-dihydroxyphenyl)-2-methylpropanoate

Methyl (S)-2-amino-3-(3-bromo-4,5-dihydroxyphenyl)-2-methylpropanoate


  • Catalogue No.:PAI 03 037030

  • CAS :

    NA

  • Molecular Formula : C11H14BrNO4

  • Molecular Weight : 304.14

PAI 03 037040

1-Oxa-2-azaspiro[2.5]octane

1-Oxa-2-azaspiro[2.5]octane


  • Catalogue No.:PAI 03 037040

  • CAS :

    185-80-8

  • Molecular Formula : C6H11NO

  • Molecular Weight : 113.16

PAI 03 037050

Methyl (S)-3-(3-bromo-4,5-dihydroxyphenyl)-2-(2-cyclohexylidenehydrazinyl)-2-methylpropanoate

Methyl (S)-3-(3-bromo-4,5-dihydroxyphenyl)-2-(2-cyclohexylidenehydrazinyl)-2-methylpropanoate


  • Catalogue No.:PAI 03 037050

  • CAS :

    NA

  • Molecular Formula : C17H23BrN2O4

  • Molecular Weight : 399.29

PA STI 088312

(S)-(-)-Carbidopa-d3 H2O (ring-d3)

(S)-(-)-Carbidopa-d3 H2O (ring-d3)


  • Catalogue No.:PA STI 088312

  • CAS :

    1276197-58-0

  • Molecular Formula : C10H13D3N2O5

  • Molecular Weight : 247.27

PA 30 0141000

1-(2-Bromo-4-hydroxy-5-methoxyphenyl)-2-propanone

1-(2-Bromo-4-hydroxy-5-methoxyphenyl)-2-propanone


  • Catalogue No.:PA 30 0141000

  • CAS :

    1017083-10-1

  • Molecular Formula : C10H11BrO3

  • Molecular Weight : 259.10

PAI 03 037051

2-Hydrazino-α-(4-hydroxy-3-methoxybenzyl)propionitrile

2-Hydrazino-α-(4-hydroxy-3-methoxybenzyl)propionitrile


  • Catalogue No.:PAI 03 037051

  • CAS :

    40248-56-4

  • Molecular Formula : C11H15N3O2

  • Molecular Weight : 221.26

PA 30 0141001

(R)-Carbidopa Methyl Ester N-Cyclohexylidene

(R)-Carbidopa Methyl Ester N-Cyclohexylidene


  • Catalogue No.:PA 30 0141001

  • CAS :

    NA

  • Molecular Formula : C17H24N2O4

  • Molecular Weight : 320.39

PA 30 0141002

D,L-Carbidopa

D,L-Carbidopa


  • Catalogue No.:PA 30 0141002

  • CAS :

    302-53-4

  • Molecular Formula : C10H14N2O4

  • Molecular Weight : 226.23

PA 30 0141003

3-(3-bromo-4,5-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoic acid

3-(3-bromo-4,5-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoic acid


  • Catalogue No.:PA 30 0141003

  • CAS :

    NA

  • Molecular Formula : C10H13BrN2O4

  • Molecular Weight : 305.13

PA 30 0141004

2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile

2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile


  • Catalogue No.:PA 30 0141004

  • CAS :

    2543-46-6

  • Molecular Formula : C12H16N2O2

  • Molecular Weight : 220.27

PA 30 0141005

(S)-2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile

(S)-2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanenitrile


  • Catalogue No.:PA 30 0141005

  • CAS :

    54716-90-4

  • Molecular Formula : C12H16N2O2

  • Molecular Weight : 220.27

PA 30 0141006

Methyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate

Methyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate


  • Catalogue No.:PA 30 0141006

  • CAS :

    91431-01-5

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA 30 0141007

Ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate hydrochloride

Ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate hydrochloride


  • Catalogue No.:PA 30 0141007

  • CAS :

    96115-88-7

  • Molecular Formula : C12H19ClN2O4

  • Molecular Weight : 290.74

PA 30 0141009

R-(+)-Carbidopa

R-(+)-Carbidopa


  • Catalogue No.:PA 30 0141009

  • CAS :

    28875-92-5

  • Molecular Formula : C10H14N2O4

  • Molecular Weight : 226.23

PA 30 0140030

Carbidopa - Impurity C

3-O-Methylcarbidopa (S - Isomer)


  • Catalogue No.:PA 30 0140030

  • CAS :

    84488-77-7

  • Molecular Formula : C11H16N2O4

  • Molecular Weight : 240.26

PA 30 0141010

(S)-3-(3,4-Dihydroxyphenyl)-2-methyl-2-(1-nitrosohydrazinyl)propanoic Acid

(S)-3-(3,4-Dihydroxyphenyl)-2-methyl-2-(1-nitrosohydrazinyl)propanoic Acid


  • Catalogue No.:PA 30 0141010

  • CAS :

    NA

  • Molecular Formula : C10H13N3O5

  • Molecular Weight : 255.23