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Impurities and reference standards

Carbidopa EP impurity E

Also known as methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate, Carbidopa Impurity E, (S)-methyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate

CAS 52514-63-3Formula C11H16N2O4Molar mass 240.26 g/mol
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Carbidopa EP impurity E chemical structure, C11H16N2O4, CAS 52514-63-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
52514-63-3
Formula
C11H16N2O4
Molar mass
240.26 g/mol
HS code
292800
Category
Impurities and reference standards

What is Carbidopa EP impurity E?

Plain description, key identifiers and synonyms

Carbidopa EP impurity E is a chemical substance with the molecular formula C11H16N2O4 and a molar mass of 240.26 g/mol. Its CAS registry number is 52514-63-3. The IUPAC name is methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate
CAS number
52514-63-3
Molecular formula
C11H16N2O4
UNII
EJ24A8QHH9
InChIKey
IETYBXLXKYRFEN-NSHDSACASA-N
InChI
InChI=1S/C11H16N2O4/c1-11(13-12,10(16)17-2)6-7-3-4-8(14)9(15)5-7/h3-5,13-15H,6,12H2,1-2H3/t11-/m0/s1
Canonical SMILES
COC(=O)C(C)(Cc1ccc(O)c(O)c1)NN
Isomeric SMILES
C[C@](CC1=CC(=C(C=C1)O)O)(C(=O)OC)NN

Synonyms

  • methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate
  • Carbidopa Impurity E
  • (S)-methyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate
  • Methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazino-2-methylpropanoate
  • Methyl (S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate
  • Benzenepropanoic acid, alpha-hydrazino-3,4-dihydroxy-alpha-methyl-, methyl ester, (S)-
  • Methyl (2S)-3-(3,4-Dihydroxyphenyl)-2-hydrazino-2-methylpropanoate (Carbidopa Methyl Ester)
  • (S)-Carbidopa Methyl Ester (>90%)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
240.26 g/molcalc.
Exact mass
240.111 Dacalc.
LogP (octanol/water)
0.04calc.
Topological polar surface area
104.8 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
4calc.
Heavy atoms
17calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.36calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Carbidopa EP impurity E suppliers

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Carbidopa EP impurity E price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Carbidopa EP impurity E is traded under.

HS 2928.00Indicative HS code

Organic derivatives of hydrazine or of hydroxylamine

World exports in 2024
$1.38B
−9.0% vs 2023, imports $1.52B
2019 to 2024
Top exporters
  1. Switzerland * partner reported44.0%
  2. China18.4%
  3. Italy9.4%
Top importers
  1. Brazil21.8%
  2. United States12.8%
  3. Italy10.8%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Carbidopa EP impurity E is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Carbidopa EP impurity E, based on the data on this page

What is Carbidopa EP impurity E?

Carbidopa EP impurity E is a chemical substance with the molecular formula C11H16N2O4 and a molar mass of 240.26 g/mol. Its CAS registry number is 52514-63-3. The IUPAC name is methyl (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate.

What is the CAS number of Carbidopa EP impurity E?

The CAS registry number of Carbidopa EP impurity E is 52514-63-3.

What is the molecular formula and weight of Carbidopa EP impurity E?

The molecular formula of Carbidopa EP impurity E is C11H16N2O4 and its molar mass is 240.26 g/mol.

Is Carbidopa EP impurity E hazardous?

No GHS hazard classification for Carbidopa EP impurity E is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Carbidopa EP impurity E?

Carbidopa EP impurity E is usually classified under HS code 292800 (Organic derivatives of hydrazine or of hydroxylamine). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Carbidopa EP impurity E?

Post a free request on CompoundList and suppliers of Carbidopa EP impurity E will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Carbidopa EP impurity E?

Suppliers quote Carbidopa EP impurity E on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Carbidopa EP impurity E

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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