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Pharmacopeial Impurities (EP / USP / BP)

Tryptophan EP Impurity K

Reference StandardAvailable on request

Order Tryptophan EP Impurity K (CAS 149724-31-2) online at Zemixal: C20H19N3O2, COA and SDS with every lot, worldwide shipping.

Pack sizes
Tryptophan EP Impurity K chemical structure
CAS number149724-31-2
FormulaC20H19N3O2
Molar mass333.4 g/mol
Physical formSolid
HS code38229090
InChIKeyRNZFOWZVRUMXDQ-INIZCTEOSA-N
IUPAC name(2S)-2-amino-3-[2-(1H-indol-3-ylmethyl)-1H-indol-3-yl]propanoic acid

About Tryptophan EP Impurity K

Tryptophan EP Impurity K is supplied by Zemixal as a characterised reference material for Tryptophan analysis. For your records (Reference Standard), the material is defined by CAS 149724-31-2, formula C20H19N3O2 and molar mass 333.4 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

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 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 K
Product nameTryptophan EP Impurity K
Catalogue numberZX-027446
CAS number149724-31-2
IUPAC name(2S)-2-amino-3-[2-(1H-indol-3-ylmethyl)-1H-indol-3-yl]propanoic acid
Molecular formulaC20H19N3O2
Molar mass333.4 g/mol
Exact mass333.1477
GradeReference Standard
Physical formSolid
XLogP31
H-bond donors / acceptors4 / 3
Topological polar surface area94.9 Ų
HS code38229090
InChIKeyRNZFOWZVRUMXDQ-INIZCTEOSA-N
SMILESC1=CC=C2C(=C1)C(=CN2)CC3=C(C4=CC=CC=C4N3)C[C@@H](C(=O)O)N
PubChem CID24802222
SynonymsTryptophan EP Impurity K (Free Base), 2-(3-Indolylmethyl)-L-tryptophan, (2S)-2-Amino-3-(2-(1H-indol-3-ylmethyl)-1H-indol-3-yl)propanoic acid, Tryptophan impurity K, L-Tryptophan, 2-(1H-indol-3-ylmethyl)-, (S)-3-(2-((1H-Indol-3-yl)methyl)-1H-indol-3-yl)-2-aminopropanoic acid, 2-(1H-Indol-3-ylmethyl)-L-tryptophan, (2S)-2-amino-3-{2-[(1H-indol-3-yl)methyl]-1H-indol-3-yl}propanoic acid, (S)-3-(2-((1H-Indol-3-yl)methyl)-1H-indol-3-yl)-2-aminopropanoicacid

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

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of Tryptophan EP Impurity K
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 K

Which CAS number identifies Tryptophan EP Impurity K?
Tryptophan EP Impurity K is registered under CAS 149724-31-2. You may also see it listed as Tryptophan EP Impurity K (Free Base), 2-(3-Indolylmethyl)-L-tryptophan, (2S)-2-Amino-3-(2-(1H-indol-3-ylmethyl)-1H-indol-3-yl)propanoic acid. Our catalogue number for this item is ZX-027446.
What are the formula and molar mass of Tryptophan EP Impurity K?
For Tryptophan EP Impurity K, its formula is C20H19N3O2 and its molar mass is 333.4 g/mol. The systematic (IUPAC) name is (2S)-2-amino-3-[2-(1H-indol-3-ylmethyl)-1H-indol-3-yl]propanoic acid. InChIKey RNZFOWZVRUMXDQ-INIZCTEOSA-N lets you match it in any structure database.
How is Tryptophan EP Impurity K used in pharmaceutical QC?
Tryptophan EP Impurity K 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 K?
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 K?
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 K to my country?
Yes. Tryptophan EP Impurity K ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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