Unithiol

Name: Unithiol
Brand: Vaqora Chemicals
SKU: VQ-040955

About Unithiol

Unithiol (CAS 4076-02-2) is an API impurity reference standard offered by Vaqora Chemicals. Formula C3H7NaO3S3, molecular weight 210.3 g/mol. Systematically, it is named sodium 2,3-bis(sulfanyl)propane-1-sulfonate. Common synonyms include Sodium 2,3-dimercapto-1-propanesulfonate and Sodium 2,3-dimercaptopropane-1-sulfonate.

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. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of the parent drug substance to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are 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

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Specifications & identifiers

Chemical identifiers
Product name	Unithiol
Catalogue No.	VQ-040955
CAS Number	4076-02-2
IUPAC name	sodium 2,3-bis(sulfanyl)propane-1-sulfonate
Molecular formula	C₃H₇NaO₃S₃
Molecular weight	210.3 g/mol
Exact mass	209.9455
Grade	Reference Standard
HSN code	38229090
InChIKey	FGGPAWQCCGEWTJ-UHFFFAOYSA-M
SMILES	C(C(CS(=O)(=O)[O-])S)S.[Na+]
PubChem CID	2724039

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 5
TPSA	67.6 Å²
Synonyms	Sodium 2,3-dimercapto-1-propanesulfonate, Sodium 2,3-dimercaptopropane-1-sulfonate, sodium 2,3-dimercaptopropanesulfonate, 1-Propanesulfonic acid, 2,3-dimercapto-, monosodium salt, 2,3-Dimercaptopropane-1-sulfonate Sodium, 1-Sodium Sulfonate, 2,3-Dimercaptopropane, Sodium 2,3-Dithiopropanesulfate, DMPS Heyl, DMPS-Heyl, Sodium 2,3-Dimercaptopropane Sulfonate, 2,3-Dimercaptopropane 1-Sodium Sulfonate, 2,3-Dithiopropanesulfate, Sodium

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 Unithiol?

The CAS Registry Number of Unithiol is 4076-02-2. It is also known as Sodium 2,3-dimercapto-1-propanesulfonate, Sodium 2,3-dimercaptopropane-1-sulfonate, sodium 2,3-dimercaptopropanesulfonate.

What is the molecular formula and molecular weight of Unithiol?

Unithiol has the molecular formula C3H7NaO3S3 and a molecular weight of 210.3 g/mol. Its IUPAC name is sodium 2,3-bis(sulfanyl)propane-1-sulfonate.

Which grade and pack sizes of Unithiol can I order?

We supply Unithiol 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 Unithiol?

Yes. Every lot of Unithiol 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 Unithiol be shipped internationally?

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