Description

S-p-Me-Bzl-B-Mercaptopropionic Acid CAS NO 79276-06-5 is a specialized organosulfur compound featuring a benzyl-protected mercaptopropionic acid backbone. This chemical serves as a critical chiral building block and intermediate in advanced organic synthesis, where precise molecular architecture is required. It is primarily utilized by research institutions and industrial R&D departments focused on pharmaceuticals, agrochemicals, and material science.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the development of active pharmaceutical ingredients (APIs), particularly in protease inhibitor research.
• Agrochemical Synthesis: Building block for creating novel pesticides and herbicides with specific stereochemical activity.
• Peptide Chemistry: Used in the synthesis of modified peptides and peptidomimetics where the protected thiol group is essential.
• Ligand and Catalyst Preparation: Serves as a precursor for chiral ligands used in asymmetric catalysis.
• Material Science Research: Intermediate in the development of functionalized polymers and advanced organic materials.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs for use in proprietary synthesis routes for clients.

Basic Information

Product Name	S-p-Me-Bzl-B-Mercaptopropionic Acid
CAS No.	79276-06-5
Molecular Formula	C11H14O2S
Molecular Weight	210.29 g/mol
Synonyms	(R)-3-[(4-Methylbenzyl)thio]propanoic Acid; (R)-3-((4-Methylbenzyl)thio)propionic Acid; (R)-3-(p-Methylbenzylthio)propionic Acid; S-p-Methylbenzyl-β-mercaptopropionic Acid; (R)-p-Methylbenzyl 3-mercaptopropionate; B-Mercaptopropionic Acid S-p-methylbenzyl Ester; (R)-3-[(4-Methylphenyl)methylsulfanyl]propanoic Acid
EINECS	Contact for details

Quality Control

Our S-p-Me-Bzl-B-Mercaptopropionic Acid is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis by HPLC, identity confirmation by IR and NMR spectroscopy, and determination of chemical purity. Certificates of Analysis (COA) with detailed chromatographic data are provided to ensure traceability and batch-to-batch consistency for your critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store the product under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.