Tryptophan EP Impurity A

Name: Tryptophan EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-028556

About Tryptophan EP Impurity A

Vaqora Chemicals supplies Tryptophan EP Impurity A, a pharmacopeial impurity of Tryptophan registered under CAS number 132685-02-0. The compound has the formula C24H26N4O4, corresponding to a molecular weight of 434.5 g/mol. Systematically, it is named (2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid. It is also known as Tryptophan - Impurity A or 1,1'-ethylidenebis[l-tryptophan].

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Pharmaceutical QC and development laboratories use this impurity standard of Tryptophan to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Tryptophan EP Impurity A in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Tryptophan

View every impurity, metabolite and intermediate we list for Tryptophan.

Tryptophan impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Tryptophan EP Impurity A
Catalogue No.	VQ-028556
CAS Number	132685-02-0
IUPAC name	(2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid
Molecular formula	C₂₄H₂₆N₄O₄
Molecular weight	434.5 g/mol
Exact mass	434.1954
Grade	Reference Standard
HSN code	38229090
InChIKey	DETVQFQGSVEQBH-PMACEKPBSA-N
SMILES	CC(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 CID	107700

Physical properties
Physical form	Solid
LogP (XLogP3)	-2.4
H-bond donors / acceptors	4 / 6
TPSA	137 Å²
Synonyms	Tryptophan - 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)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Tryptophan EP Impurity A?

The CAS Registry Number of Tryptophan EP Impurity A is 132685-02-0. It is also known as Tryptophan - Impurity A, 1,1'-ethylidenebis[l-tryptophan], 1,1'-Ethylidenebis(tryptophan).

What is the molecular formula and molecular weight of Tryptophan EP Impurity A?

Tryptophan EP Impurity A has the molecular formula C24H26N4O4 and a molecular weight of 434.5 g/mol. Its IUPAC name is (2S)-2-amino-3-[1-[1-[3-[(2S)-2-amino-2-carboxyethyl]indol-1-yl]ethyl]indol-3-yl]propanoic acid.

What is Tryptophan EP Impurity A used for?

Tryptophan EP Impurity A is supplied as a characterised reference material related to Tryptophan. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Tryptophan EP Impurity A can I order?

We supply Tryptophan EP Impurity A in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tryptophan EP Impurity A?

Yes. Every lot of Tryptophan EP Impurity A is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Tryptophan EP Impurity A be shipped internationally?

Yes. Tryptophan EP Impurity A is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.