CAS Registry Number

CAS 54947-74-9 — 4-Methyloctanoic acid

4-Methyloctanoic acid is a branched-chain fatty acid used in fragrance synthesis, flavor formulations, and as a precursor in organic chemistry for creating custom esters and derivatives. It appears as a colorless to pale yellow liquid with a mild, fatty odor. CAS 54947-74-9, molecular formula CH3(CH2)3CH(CH3)CH2CH2CO2H, molecular weight 158.24 g/mol, and requires ambient storage. Hazard classification includes a **Danger** signal word due to potential skin and eye irritation. Molekula supplies 4-Methyloctanoic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.