3-Mercaptopropionic acid, 99%

About 3-Mercaptopropionic acid, 99%

3-Mercaptopropionic acid is a peptide synthesis reagent in Synthesis grade carrying the CAS registry number 107-96-0 at a purity of 99%. Its molecular formula is C3H6O2S and its molecular weight is 106.15 g/mol. Systematically, it is named 3-sulfanylpropanoic acid. Common synonyms include 3-Mercapto propionic acid and 3-Mercaptopropanoic acid.

The material typically appears as a colourless to light yellow liquid. Key physical data: a melting point of 15-18 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. It carries the GHS signal word “Danger” with 6 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for peptide coupling, solid-phase peptide synthesis, bioconjugation and protein and peptide research. Buyers come mainly from academic and industrial research and diagnostics and biotechnology.

Standard pack sizes are 100 g, 500 g and 250 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Peptide coupling
Solid-phase peptide synthesis
Bioconjugation
Protein & peptide research

Industries

Specifications & identifiers

Chemical identifiers
Product name	3-Mercaptopropionic acid, 99%
Catalogue No.	VQ-002362
CAS Number	107-96-0
IUPAC name	3-sulfanylpropanoic acid
Molecular formula	C₃H₆O₂S
Molecular weight	106.15 g/mol
Exact mass	106.0089
Grade	Synthesis
Purity / assay	99%
HSN code	29309090
InChIKey	DKIDEFUBRARXTE-UHFFFAOYSA-N
SMILES	C(CS)C(=O)O
PubChem CID	6514

Physical properties
Physical form	Liquid
Appearance	Colourless to light yellow liquid
Melting point	15-18 °C
LogP (XLogP3)	0.4
H-bond donors / acceptors	2 / 3
TPSA	38.3 Å²
UN number	UN 2922
Synonyms	3-Mercapto propionic acid, 3-Mercaptopropanoic acid, 3-Thiopropanoic acid, 3-Thiopropionic acid, beta-Mercaptopropionic acid, Propanoic acid, 3-mercapto-, 3MPA, 2-Mercaptoethanecarboxylic acid, beta-Thiopropionic acid, Thiohydracrylic acid, beta-Mercaptopropanoic acid, Propionic acid, 3-mercpato-

Safety & hazard information (GHS)

Corrosive

Toxic

Harmful / irritant

Signal word: Danger

Hazard statements

H290May be corrosive to metals
H301Toxic if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H332Harmful if inhaled

Precautionary statements: P234, P260, P261, P262, P264, P264 + P265, P270, P271, P280, P301 + P316, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P330, P361 + P364, P363, P390, P405, P406

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 3-Mercaptopropionic acid, 99%?

The CAS Registry Number of 3-Mercaptopropionic acid, 99% is 107-96-0. It is also known as 3-Mercapto propionic acid, 3-Mercaptopropanoic acid, 3-Thiopropanoic acid.

What is the molecular formula and molecular weight of 3-Mercaptopropionic acid, 99%?

3-Mercaptopropionic acid, 99% has the molecular formula C3H6O2S and a molecular weight of 106.15 g/mol. Its IUPAC name is 3-sulfanylpropanoic acid.

Which grade and pack sizes of 3-Mercaptopropionic acid, 99% can I order?

We supply 3-Mercaptopropionic acid, 99% in Synthesis (99%) grade, in 100 g, 500 g, 250 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 3-Mercaptopropionic acid, 99%?

Yes. Every lot of 3-Mercaptopropionic acid, 99% 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 3-Mercaptopropionic acid, 99% be shipped internationally?

Yes. 3-Mercaptopropionic acid, 99% is classified as hazardous (UN 2922), 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.