Shipping to 128 countriesCOA and SDS with every lotQuotes within one business day
contact@zemixal.com
Bulk CASAccount
Pharmacopeial Impurities (EP / USP / BP)

Methyldopa EP Impurity B

Reference StandardAvailable on request

Order Methyldopa EP Impurity B (CAS 65555-88-6) online at Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-030552.

Pack sizes
Methyldopa EP Impurity B chemical structure
CAS number65555-88-6
FormulaC11H15NO3
Molar mass209.24 g/mol
Physical formSolid
HS code38229090
InChIKeyGSEIHXWCWAMTTH-NSHDSACASA-N
IUPAC name(2S)-2-amino-3-(4-methoxyphenyl)-2-methylpropanoic acid

About Methyldopa EP Impurity B

Methyldopa EP Impurity B belongs to the Methyldopa reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 65555-88-6, formula C11H15NO3 and molar mass 209.24 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 H302, 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. Every shipment includes a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

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 B
Product nameMethyldopa EP Impurity B
Catalogue numberZX-030552
CAS number65555-88-6
IUPAC name(2S)-2-amino-3-(4-methoxyphenyl)-2-methylpropanoic acid
Molecular formulaC11H15NO3
Molar mass209.24 g/mol
Exact mass209.1052
GradeReference Standard
Physical formSolid
XLogP3-1.2
H-bond donors / acceptors2 / 4
Topological polar surface area72.6 Ų
HS code38229090
InChIKeyGSEIHXWCWAMTTH-NSHDSACASA-N
SMILESC[C@](CC1=CC=C(C=C1)OC)(C(=O)O)N
PubChem CID13876049
SynonymsMethyldopa - Impurity B (Freebase), O,alpha-dimethyl-L-tyrosine, L-Tyrosine, O,alpha-dimethyl-, Methyldopa specified impurity B, (S)-2-Amino-3-(4-methoxyphenyl)-2-methylpropanoic acid, 4-Methoxy-a-methyl-L-phenylalanine, (2S)-2-amino-3-(4-methoxyphenyl)-2-methyl-propanoic acid

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 Methyldopa EP Impurity B
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 B

Which CAS number identifies Methyldopa EP Impurity B?
Methyldopa EP Impurity B is registered under CAS 65555-88-6. You may also see it listed as Methyldopa - Impurity B (Freebase), O,alpha-dimethyl-L-tyrosine, L-Tyrosine, O,alpha-dimethyl-. Our catalogue number for this item is ZX-030552.
What are the formula and molar mass of Methyldopa EP Impurity B?
For Methyldopa EP Impurity B, its formula is C11H15NO3 and its molar mass is 209.24 g/mol. The systematic (IUPAC) name is (2S)-2-amino-3-(4-methoxyphenyl)-2-methylpropanoic acid. InChIKey GSEIHXWCWAMTTH-NSHDSACASA-N lets you match it in any structure database.
How is Methyldopa EP Impurity B used in pharmaceutical QC?
Methyldopa EP Impurity B 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 B?
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 B?
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 B to my country?
Yes. Because Methyldopa EP Impurity B 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.

More Methyldopa standards

More in Pharmacopeial Impurities (EP / USP / BP)

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list
Compare 0 of 4Compare now