A pharmaceutically acceptable salt of (R)-3-(acetylamino)-3-methoxy-2-oxo-1-azetidinesulfonic acid can be prepared by culturing Chromobacterium violaceum A.T.C.C. No. 31532 at about 25.degree. C. under submerged aerobic conditions on an aqueous nutrient medium containing an assimilable carbohydrate and nitrogen source.
(R)-3-(乙酰
氨基)-3-甲
氧基-2-
氧代-1-
氮杂丁
磺酸的药用可接受盐,可以通过在含有可同化
碳水化合物和
氮源的
水性营养
培养基上,在大约25℃的条件下,以浸没式好
氧条件下培养紫色单胞菌Chromobacterium violaceum A
TCC No.31532来制备。