PENICILLIN CRYSTAL AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a TMPB substance excellent in stability without danger of quality deterioration due to decomposition even after storage for a long time at room temperature. SOLUTION: The TMPB substance of the present invention is a crystal of 2-methyl-2-triazolylmethylpenam-3-carboxylic acid 1,1dioxidodiphenylmethyl ester having peaks in lattice face intervals in X-ray diffraction pattern of powder obtained with copper radioactive ray ofλ=1.5418 angstrom passed through a monochromater.