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Pharmacopeial Impurities (EP / USP / BP)

Tryptophan EP Impurity A

Reference StandardAvailable on request

Order Tryptophan EP Impurity A (CAS 132685-02-0) online at Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Tryptophan EP Impurity A chemical structure
CAS number132685-02-0
FormulaC24H26N4O4
Molar mass434.5 g/mol
Physical formSolid
HS code38229090
InChIKeyDETVQFQGSVEQBH-PMACEKPBSA-N
IUPAC name(2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid

About Tryptophan EP Impurity A

Tryptophan EP Impurity A belongs to the Tryptophan reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 132685-02-0, formula C24H26N4O4 and molar mass 434.5 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Storage and safety notes

Classified under GHS with signal word Warning and hazard statements H302. 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. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Tryptophan

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

Tryptophan standards

Typical uses

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

Applications

Grade guides

Specifications and identifiers

Specifications of Tryptophan EP Impurity A
Product nameTryptophan EP Impurity A
Catalogue numberZX-027442
CAS number132685-02-0
IUPAC name(2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid
Molecular formulaC24H26N4O4
Molar mass434.5 g/mol
Exact mass434.1954
GradeReference Standard
Physical formSolid
XLogP3-2.4
H-bond donors / acceptors4 / 6
Topological polar surface area137 Ų
HS code38229090
InChIKeyDETVQFQGSVEQBH-PMACEKPBSA-N
SMILESCC(N1C=C(C2=CC=CC=C21)C[C@@H](C(=O)O)N)N3C=C(C4=CC=CC=C43)C[C@@H](C(=O)O)N
PubChem CID107700
SynonymsTryptophan - Impurity A, 1,1'-ethylidenebis[l-tryptophan], 1,1'-Ethylidenebis(tryptophan), 1,1'-Ebt, 1,1'-ethylidene bis(tryptophan), 1,1'-ethylidenebis(L-tryptophan), L-Tryptophan, 1,1'-ethylidenebis-, 1,1'-ethylidene bis[tryptophan], Peak E, (2S,2'S)-3,3'-(1,1'-(Ethane-1,1-diyl)bis(1H-indole-3,1-diyl))bis(2-aminopropanoic acid), 1,1 inverted exclamation marka-Ethylidenebis[L-tryptophan], 1,1'-Ethylidene-bis-(L-tryptophan)

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

Precautionary statements P264, P270, P301 + P317, P330, 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 Tryptophan EP Impurity A
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 Tryptophan EP Impurity A

Which CAS number identifies Tryptophan EP Impurity A?
Tryptophan EP Impurity A is registered under CAS 132685-02-0. You may also see it listed as Tryptophan - Impurity A, 1,1'-ethylidenebis[l-tryptophan], 1,1'-Ethylidenebis(tryptophan). Our catalogue number for this item is ZX-027442.
What are the formula and molar mass of Tryptophan EP Impurity A?
For Tryptophan EP Impurity A, its formula is C24H26N4O4 and its molar mass is 434.5 g/mol. The systematic (IUPAC) name is (2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid. InChIKey DETVQFQGSVEQBH-PMACEKPBSA-N lets you match it in any structure database.
How is Tryptophan EP Impurity A used in pharmaceutical QC?
Tryptophan EP Impurity A is a characterised reference material linked to Tryptophan. 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 Tryptophan EP Impurity A?
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 Tryptophan EP Impurity A?
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 Tryptophan EP Impurity A to my country?
Yes. Because Tryptophan EP Impurity A 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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