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Pharmacopeial Impurities (EP / USP / BP)

Carbidopa EP Impurity F(Free Base)

Reference StandardAvailable on request

Carbidopa EP Impurity F(Free Base) (CAS 91908-71-3) supplier Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Carbidopa EP Impurity F(Free Base) chemical structure
CAS number91908-71-3
FormulaC12H18N2O4
Molar mass254.28 g/mol
Physical formSolid
HS code38229090
InChIKeyIVYOMTNVXXPNCD-UHFFFAOYSA-N
IUPAC nameethyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate

About Carbidopa EP Impurity F(Free Base)

Zemixal lists Carbidopa EP Impurity F(Free Base) for laboratories that identify, quantify or control Calcipotriol and its related substances. Identity at a glance (Reference Standard): CAS 91908-71-3, formula C12H18N2O4 and molar mass 254.28 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

It carries the GHS signal word Warning (H302, H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Calcipotriol

See every impurity, metabolite and related compound we list for this API.

Calcipotriol standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Carbidopa EP Impurity F(Free Base)
Product nameCarbidopa EP Impurity F(Free Base)
Catalogue numberZX-045631
CAS number91908-71-3
IUPAC nameethyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate
Molecular formulaC12H18N2O4
Molar mass254.28 g/mol
Exact mass254.1267
GradeReference Standard
Physical formSolid
XLogP30.8
H-bond donors / acceptors4 / 6
Topological polar surface area105 Ų
HS code38229090
InChIKeyIVYOMTNVXXPNCD-UHFFFAOYSA-N
SMILESCCOC(=O)C(C)(CC1=CC(=C(C=C1)O)O)NN
PubChem CID21964632
SynonymsEthyl 3-(3,4-dihydroxyphenyl)-2-hydrazineyl-2-methylpropanoate, Racemic carbidopa ethyl ester, Carbidopa Ethyl Ester, (RS)-, carbidopa ethyl ester, hydrochloride, ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazino-2-methyl-propanoate, Ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazino-2-methyl-propionate, Ethyl alpha-hydrazinyl-3,4-dihydroxy-alpha-methylbenzenepropanoate, Benzenepropanoic acid, alpha-hydrazino-3,4-dihydroxy-alpha-methyl-, ethyl ester, Benzenepropanoic acid, alpha-hydrazinyl-3,4-dihydroxy-alpha-methyl-, ethyl ester, Hydrocinnamic acid, alpha-hydrazino-3,4-dihydroxy-alpha-methyl-, ethyl ester

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Carbidopa EP Impurity F(Free Base)
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Carbidopa EP Impurity F(Free Base)

Which CAS number identifies Carbidopa EP Impurity F(Free Base)?
Carbidopa EP Impurity F(Free Base) is registered under CAS 91908-71-3. You may also see it listed as Ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazineyl-2-methylpropanoate, Racemic carbidopa ethyl ester, Carbidopa Ethyl Ester, (RS)-. Our catalogue number for this item is ZX-045631.
What are the formula and molar mass of Carbidopa EP Impurity F(Free Base)?
For Carbidopa EP Impurity F(Free Base), its formula is C12H18N2O4 and its molar mass is 254.28 g/mol. The systematic (IUPAC) name is ethyl 3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoate. InChIKey IVYOMTNVXXPNCD-UHFFFAOYSA-N lets you match it in any structure database.
How is Carbidopa EP Impurity F(Free Base) used in pharmaceutical QC?
Carbidopa EP Impurity F(Free Base) is a characterised reference material linked to Calcipotriol. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Carbidopa EP Impurity F(Free Base)?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Carbidopa EP Impurity F(Free Base)?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Carbidopa EP Impurity F(Free Base) to my country?
Yes. Because Carbidopa EP Impurity F(Free Base) is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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