CAS No. 938-97-6

Content: above 99%, R type (i.e. type D) : crystal, melting point 240 ℃ (breakdown), [alpha] - 158.4 ° C = 1, 1 (mol/L HCl in). (+ / -) type: flake crystallization (water), soluble in water, ether insoluble in ℃ don't melt decomposition, 200. Hydroxyl ampicillin penicillin, cefoperazone etc beta beta-lactamase-producing class antibiotic intermediate (by D type).