Methional (CAS 3268-49-3) Sigma-Aldrich

Methional molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 9 grades and pack sizes of Methional (CAS 3268-49-3). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	3268-49-3
Molecular formula	C4H8OS
Molecular weight	104.17 g/mol
IUPAC name	3-methylsulfanylpropanal
Synonyms	3-(Methylthio)propionaldehyde · Propanal, 3-(methylthio)- · 4-Thiapentanal · Propionaldehyde, 3-(methylthio)- · 3-Methylmercaptopropyl aldehyde · Methylmercaptopropionic aldehyde

Safety & Hazards (GHS) Danger

Corrosive

Acute toxic

H302 Harmful if swallowed
H311 Toxic in contact with skin
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H332 Harmful if inhaled
H412 Harmful to aquatic life with long lasting effects

⚠️ 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	3-(METHYLTHIO)PROPIONALDEHYDE, 96%	277460-25ML 277460-5ML	Request Quote
Sigma	METHIONAL, >=97%, FG	W274704-1KG-K W274704-25KG-K W274704-5KG-K W274704-SAMPLE-K	Request Quote
Sigma	METHIONAL, NATURAL, 98%, FG	W274711-100G-K W274711-500G-K W274711-SAMPLE-K	Request Quote

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