Butanal (CAS 123-72-8) Sigma-Aldrich

Butanal molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 13 grades and pack sizes of Butanal (CAS 123-72-8). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	123-72-8
Molecular formula	C4H8O
Molecular weight	72.11 g/mol
IUPAC name	butanal
Synonyms	butyraldehyde · n-butyraldehyde · Butyral · 1-butanal · Butyric aldehyde · Butaldehyde

Safety & Hazards (GHS) Danger

Flammable

H225 Highly Flammable liquid and vapor

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	BUTYRALDEHYDE	94194-1ML	Request Quote
Sigma	BUTYRALDEHYDE, >=96.0%	W221902-1KG-K W221902-20KG-K W221902-4KG-K W221902-SAMPLE-K	Request Quote
Sigma	BUTYRALDEHYDE, >=99.0%, DRY	538191-100ML 538191-1L	Request Quote
Sigma	BUTYRALDEHYDE, NATURAL, >=95%, FG	W221910-100G-K W221910-1KG-K W221910-SAMPLE-K	Request Quote
Sigma	BUTYRALDEHYDE, REDISTILLED, 99.5%	418102-100ML	Request Quote
Sigma	BUTYRALDEHYDE, REDISTILLED, 99.5+%	418102-800ML	Request Quote
Sigma	BUTYRALDEHYDE, UNITED STATES PHARMACOPEI	1084259-3X1.2ML	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.