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Pharmacopeial Impurities (EP / USP / BP)

Methyldopa EP Impurity C

Reference StandardAvailable on request

Methyldopa EP Impurity C (CAS 39948-18-0) supplier Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-032828.

Pack sizes
Methyldopa EP Impurity C chemical structure
CAS number39948-18-0
FormulaC12H17NO4
Molar mass239.27 g/mol
Physical formSolid
HS code38229090
InChIKeyQCCQWLWXLUTSAK-LBPRGKRZSA-N
IUPAC name(2S)-2-amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid

About Methyldopa EP Impurity C

Methyldopa EP Impurity C is supplied by Zemixal as a characterised reference material for Methyldopa analysis. For your records (Reference Standard), the material is defined by CAS 39948-18-0, formula C12H17NO4 and molar mass 239.27 g/mol. It is handled as a solid.

Use cases we see most often

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

Safe handling

Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. 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 Methyldopa

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

Methyldopa 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 Methyldopa EP Impurity C
Product nameMethyldopa EP Impurity C
Catalogue numberZX-032828
CAS number39948-18-0
IUPAC name(2S)-2-amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid
Molecular formulaC12H17NO4
Molar mass239.27 g/mol
Exact mass239.1158
GradeReference Standard
Physical formSolid
XLogP3-1.7
H-bond donors / acceptors2 / 5
Topological polar surface area81.8 Ų
HS code38229090
InChIKeyQCCQWLWXLUTSAK-LBPRGKRZSA-N
SMILESC[C@](CC1=CC(=C(C=C1)OC)OC)(C(=O)O)N
PubChem CID195139
SynonymsMethyldopa - Impurity C (Freebase), 3-Methoxy-O,alpha-dimethyl-L-tyrosine, L-Tyrosine, 3-methoxy-O,alpha-dimethyl-, Dimethyl methyldopa, (S)-2-Amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid, DL-3-(3,4-Dimethoxyphenyl)-2-methylalanine, 3-Methoxy-O,alpha-dimethyltyrosine, 3,4-DIMETHOXY-alpha-METHYL-DOPA, L-3,4-Dimethoxy-, A-methylphenylalanine

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

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, 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 Methyldopa EP Impurity C
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 Methyldopa EP Impurity C

Which CAS number identifies Methyldopa EP Impurity C?
Methyldopa EP Impurity C is registered under CAS 39948-18-0. You may also see it listed as Methyldopa - Impurity C (Freebase), 3-Methoxy-O,alpha-dimethyl-L-tyrosine, L-Tyrosine, 3-methoxy-O,alpha-dimethyl-. Our catalogue number for this item is ZX-032828.
What are the formula and molar mass of Methyldopa EP Impurity C?
For Methyldopa EP Impurity C, its formula is C12H17NO4 and its molar mass is 239.27 g/mol. The systematic (IUPAC) name is (2S)-2-amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid. InChIKey QCCQWLWXLUTSAK-LBPRGKRZSA-N lets you match it in any structure database.
How is Methyldopa EP Impurity C used in pharmaceutical QC?
Methyldopa EP Impurity C is a characterised reference material linked to Methyldopa. 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 Methyldopa EP Impurity C?
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 Methyldopa EP Impurity C?
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 Methyldopa EP Impurity C to my country?
Yes. Because Methyldopa EP Impurity C 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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