CAS Registry Number

CAS 38861-78-8 — 4'-Isobutylacetophenone

4'-Isobutylacetophenone is an aromatic ketone used mainly as the key intermediate in ibuprofen synthesis, where it is made by Friedel-Crafts acetylation of isobutylbenzene in both the Boots and BHC processes, and it is also catalogued as the pharmacopoeial reference standard Ibuprofen Impurity E. It appears as a pale yellow to colorless liquid with a characteristic sweet, floral aroma. This chemical has a CAS number of 38861-78-8, a molecular formula of C12H16O, and a molecular weight of 176.25 g/mol. Store it at 2 to 8°C in a cool, dry place, away from incompatible substances. The product carries a signal word of Warning for safety handling. Molekula supplies 4'-Isobutylacetophenone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: 1-(4-Isobutylphenyl)ethan-1-one · 1-(4-Isobutylphenyl)ethanone · 1-[4-(2-methylpropyl)phenyl]ethan-1-one · 1-[4-(2-methylpropyl)phenyl]ethanone · 1-acetyl-4-(2-methylpropyl)benzene · 4'-(2-Methylpropyl)acetophenone · Acetophenone, 4-isobutyl- · Ethanone, 1-[4-(2-methylpropyl)phenyl]- · p-Isobutylacetophenone · Ibuprofen Related Compound C - USP CRS