3-Methylbutanoyl chloride

Name: Shanghai Blue Aurora Fine Chemical Technology Co., Ltd.
Address: Room 509, Floor 5, Building 13, Lane 16299, Puwei Highway, Shanyang Town, Jinshan District, Shanghai, China, Shanghai, Shanghai, CN
Telephone: +86 13472868731

CAS 108-12-3

HS 29159080

Product name: 3-Methylbutanoyl chloride
CAS No.: 108-12-3
Molecular formula: C5H9ClO
Applications:
Core Industrial Applications
1. Pharmaceutical intermediates (largest demand)
• Cephalosporin antibiotic side-chain feedstock (cefuroxime, cefdinir); modifies β-lactam ring to enhance antibacterial activity
• Acylation building block for antitumor, immunosuppressant and CNS drugs; isovaleryl branch optimizes partition coefficient and extends in vivo metabolic half-life
• Peptide acylation reagent for small-molecule peptide API preparation
2. Agrochemicals
Synthesis of iprodione fungicide and pyrethroid insecticides; isovaleryl group enhances pesticide systemic translocation and rainfastness.
3. Fragrances
Esterification to isovalerate fragrances (ethyl isovalerate, isobutyl isovalerate) — core raw materials for apple, banana and cheese profiles in food and personal-care applications.
4. Organic synthesis & polymers
• General Friedel–Crafts acylation agent for aromatic ketone intermediates
• Precursor for mid/low-temperature polymerization peroxide initiators
• Nonionic surfactant and textile auxiliary feedstock

Supplied by Shanghai Blue Aurora Fine Chemical Technology Co., Ltd. — flexible MOQ, mixed shipments, worldwide delivery.