(3S-trans)-3-[[[2-(t-butoxycarbonylamino)-4-thiazolyl]acetyl]amino]-4-methyl-2-oxo-1-azetidinesulfonic acid, tetrabutylammonium salt 、 Å molecular sieves 、
potassium nonaflate 生成
(3S-trans)-3-[[[2-(t-Butoxycarbonylamino)-4-thiazolyl]oxoacetyl]amino]-4-methyl-2-oxo-1-azetidinesulfonic acid