Tryptophan EP Impurity B

Name: Tryptophan EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-034468

About Tryptophan EP Impurity B

Listed under CAS 184955-21-3, Tryptophan EP Impurity B is a pharmacopeial impurity of Tryptophan available from Vaqora Chemicals. Its molecular formula is C11H12N2O4 and its molecular weight is 236.22 g/mol. Systematically, it is named (2S)-2-amino-3-(3-hydroxy-2-oxo-1H-indol-3-yl)propanoic acid. Alternative names: Tryptophan - Impurity B and dioxyindolylalanine.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Tryptophan, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Tryptophan EP Impurity B 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 B
Catalogue No.	VQ-034468
CAS Number	184955-21-3
IUPAC name	(2S)-2-amino-3-(3-hydroxy-2-oxo-1H-indol-3-yl)propanoic acid
Molecular formula	C₁₁H₁₂N₂O₄
Molecular weight	236.22 g/mol
Exact mass	236.0797
Grade	Reference Standard
HSN code	38229090
InChIKey	BZRCOYDQHJWPQZ-RGENBBCFSA-N
SMILES	C1=CC=C2C(=C1)C(C(=O)N2)(C[C@@H](C(=O)O)N)O
PubChem CID	14680134

Physical properties
Physical form	Solid
LogP (XLogP3)	-2.6
H-bond donors / acceptors	4 / 5
TPSA	113 Å²
Synonyms	Tryptophan - Impurity B, dioxyindolylalanine, (alphaS)-alpha-Amino-2,3-dihydro-3-hydroxy-2-oxo-1H-indole-3-propanoic acid, Tryptophan Impurity B, dioxindolyl-l-alanine, (2S)-2-amino-3-(3-hydroxy-2-oxoindolin-3-yl)propanoic acid, (2S)-2-Amino-3-((3RS)-3-hydroxy-2-oxo-2,3-dihydro-1H-indol-3-yl)propanoic acid, (2S)-2-Amino-3-(3-hydroxy-2-oxoindolin-3-yl)propanoic acid, Tryptophan Impurity, 1H-Indole-3-propanoic acid, alpha-amino-2,3-dihydro-3-hydroxy-2-oxo-, (3(S))-, 1H-Indole-3-propanoic acid, alpha-amino-2,3-dihydro-3-hydroxy-2-oxo-, (alphaS)-

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 B?

The CAS Registry Number of Tryptophan EP Impurity B is 184955-21-3. It is also known as Tryptophan - Impurity B, dioxyindolylalanine, (alphaS)-alpha-Amino-2,3-dihydro-3-hydroxy-2-oxo-1H-indole-3-propanoic acid.

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

Tryptophan EP Impurity B has the molecular formula C11H12N2O4 and a molecular weight of 236.22 g/mol. Its IUPAC name is (2S)-2-amino-3-(3-hydroxy-2-oxo-1H-indol-3-yl)propanoic acid.

What is Tryptophan EP Impurity B used for?

Tryptophan EP Impurity B 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 B can I order?

We supply Tryptophan EP Impurity B 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 B?

Yes. Every lot of Tryptophan EP Impurity B 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 B be shipped internationally?

Yes. We export Tryptophan EP Impurity B worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.