4-acetoxyazetidin-2-one

4-Acetoxyazetidin-2-one (4AA) is an important intermediate used to synthesize beta-lactam antibiotics such as carbapenems and penems. Offered at pharmaceutical grade — though not directly manufactured — by Hebei Wordstar Chemical Co.,Ltd, it is described as a white to off-white crystalline powder with an assay of no less than 99.0% by HPLC and a specific optical rotation of +47° to +51°; it is distributed across North America, Central/South America, Western and Eastern Europe, Australasia, Asia, the Middle East, and Africa.