CAS Registry Number

CAS 529-20-4 — o-Tolualdehyde

o-Tolualdehyde is an aromatic aldehyde with the chemical formula C8H8O, characterized by a methyl group ortho to the aldehyde functional group on a benzene ring. It serves as a key intermediate in the synthesis of pharmaceuticals, agrochemicals, and fragrances, as well as a precursor in organic synthesis for producing dyes, resins, and specialty chemicals. This product has a CAS number of 529-20-4 and carries no signal word under GHS classification, indicating low acute toxicity. It is a clear to pale yellow liquid with a sharp, aromatic odor, typically used in controlled laboratory and industrial settings. Molekula supplies o-Tolualdehyde from research to bulk quantities with full documentation and ISO 9001:2015 traceability.