Letosteine

Name: Letosteine
Brand: Vaqora Chemicals
SKU: VQ-037964

About Letosteine

Letosteine (CAS 53943-88-7) is an API reference standard offered by Vaqora Chemicals. Formula C10H17NO4S2, molecular weight 279.4 g/mol. Systematically, it is named 2-[2-(2-ethoxy-2-oxoethyl)sulfanylethyl]-1,3-thiazolidine-4-carboxylic acid. It is also known as Viscotiol.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Laboratories use this the parent drug substance standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Specifications & identifiers

Chemical identifiers
Product name	Letosteine
Catalogue No.	VQ-037964
CAS Number	53943-88-7
IUPAC name	2-[2-(2-ethoxy-2-oxoethyl)sulfanylethyl]-1,3-thiazolidine-4-carboxylic acid
Molecular formula	C₁₀H₁₇NO₄S₂
Molecular weight	279.4 g/mol
Exact mass	279.0599
Grade	Reference Standard
HSN code	38229090
InChIKey	IKOCLISPVJZJEA-UHFFFAOYSA-N
SMILES	CCOC(=O)CSCCC1NC(CS1)C(=O)O
PubChem CID	68707

Physical properties
Physical form	Solid
LogP (XLogP3)	-1
H-bond donors / acceptors	2 / 7
TPSA	126 Å²
Synonyms	Viscotiol, 2-{2-[(2-ethoxy-2-oxoethyl)sulfanyl]ethyl}-1,3-thiazolidine-4-carboxylic acid, 4-Thiazolidinecarboxylic acid, 2-[2-[(2-ethoxy-2-oxoethyl)thio]ethyl]-, 2-(2-((Carboxymethyl)thio)ethyl)-4-thiazolidinecarboxylic acid 2-ethyl ester, 4-Thiazolidinecarboxylic acid, 2-(2-((2-ethoxy-2-oxoethyl)thio)ethyl)-, 2-(2-((2-ethoxy-2-oxoethyl)sulfanyl)ethyl)-1,3-thiazolidine-4-carboxylic acid, 2-(2-((2-Ethoxy-2-oxoethyl)thio)ethyl)thiazolidine-4-carboxylic acid, 2-[2-(2-ethoxy-2-oxo-ethyl)sulfanylethyl]thiazolidine-4-carboxylic acid

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 Letosteine?

The CAS Registry Number of Letosteine is 53943-88-7. It is also known as Viscotiol, 2-{2-[(2-ethoxy-2-oxoethyl)sulfanyl]ethyl}-1,3-thiazolidine-4-carboxylic acid, 4-Thiazolidinecarboxylic acid, 2-[2-[(2-ethoxy-2-oxoethyl)thio]ethyl]-.

What is the molecular formula and molecular weight of Letosteine?

Letosteine has the molecular formula C10H17NO4S2 and a molecular weight of 279.4 g/mol. Its IUPAC name is 2-[2-(2-ethoxy-2-oxoethyl)sulfanylethyl]-1,3-thiazolidine-4-carboxylic acid.

Which grade and pack sizes of Letosteine can I order?

We supply Letosteine 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 Letosteine?

Yes. Every lot of Letosteine 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 Letosteine be shipped internationally?

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