L-Selenocysteine

About L-Selenocysteine

L-Selenocysteine is a process intermediate or related compound of N methylpyrrolidone carrying the CAS registry number 10236-58-5. With the molecular formula C3H7NO2Se, it has a molar mass of 168.06 g/mol. Its systematic (IUPAC) name is (2R)-2-amino-3-selanylpropanoic acid. Common synonyms include 3-Selenylalanine and Selenocysteine, DL.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Process chemists and analysts use it when developing synthetic routes to N methylpyrrolidone, tracking process-related impurities and validating analytical methods. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, L-Selenocysteine is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to N methylpyrrolidone

View every impurity, metabolite and intermediate we list for N methylpyrrolidone.

N methylpyrrolidone impurities

Specifications & identifiers

Chemical identifiers
Product name	L-Selenocysteine
Catalogue No.	VQ-050755
CAS Number	10236-58-5
IUPAC name	(2R)-2-amino-3-selanylpropanoic acid
Molecular formula	C₃H₇NO₂Se
Molecular weight	168.06 g/mol
Exact mass	168.9642
InChIKey	ZKZBPNGNEQAJSX-REOHCLBHSA-N
SMILES	C([C@@H](C(=O)O)N)[SeH]
PubChem CID	25076

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 3
TPSA	63.3 Å²
Synonyms	3-Selenylalanine, Selenocysteine, DL, 3-Selenoalanine, D,L-selenocysteine, L-Alanine, 3-selenyl-, Selenium cysteine, Selenocysteine, (R)-2-Amino-3-hydroselenopropanoic acid, Alanine, 3-selenyl-, Se-cysteine

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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 L-Selenocysteine?

The CAS Registry Number of L-Selenocysteine is 10236-58-5. It is also known as 3-Selenylalanine, Selenocysteine, DL, 3-Selenoalanine.

What is the molecular formula and molecular weight of L-Selenocysteine?

L-Selenocysteine has the molecular formula C3H7NO2Se and a molecular weight of 168.06 g/mol. Its IUPAC name is (2R)-2-amino-3-selanylpropanoic acid.

What is L-Selenocysteine used for?

L-Selenocysteine is supplied as a characterised reference material related to N methylpyrrolidone. 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 L-Selenocysteine can I order?

We supply L-Selenocysteine, 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 L-Selenocysteine?

Yes. Every lot of L-Selenocysteine 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 L-Selenocysteine be shipped internationally?

Yes. L-Selenocysteine 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.