acetylatev.

1885 Jrnl. Amer. Chem. Soc. 7 249 In order to obtain isomers holding different positions, pseudocumidine was acetylated, then nitrated.

1927 T. Woodhouse Artificial Silk: Manuf. & Uses iv. 31 The raw material is almost invariably cotton which is acetylated by acetic anhydride in the presence of a catalyst, usually sulphuric acid.

1946 Nature 19 Oct. 553/2 Wassermann has attempted to acetylate alginic acid with ketene.

1977 Ann. Internal Med. 86 103/2 Aspirin blocks the platelet release reaction and associated secondary irreversible aggregation by acetylating prostaglandin synthetase.

2004 Times Lit. Suppl. 10 Dec. 29/1 The tale..really gets going when chemists discover how to acetylate the active ingredient, salicylic acid.

1899 U.S. Patent 629,748 1/1 If this naphthylenediamin sulfonic acid is suitably treated with certain acetylating agents, such as acetic acid, one of the amido groups is acetylated.

1908 Science 21 Feb. 315/1 Ketene..is an admirable acetylating agent.

1988 Q. N. Myrvik & R. S. Weiser Fund. Med. Bacteriol. & Mycol. (ed. 2) vi. 87 A variety of enzymes which inactivate aminoglycosides have been identified. These include acetylating, phosphorylating and adenylating enzymes.