14371-55-2 AC 52069 American cyanamid CL-52069 CL-52069 ENT 27,171 Imidocarbonic acid, (dimethoxyphosphinothioyl)thio-, cyclic ethylene ester O,O-Dimethyl 1,3-oxathiolan-2-ylidenephosphoramidothioate Phosphoramidothioic acid, 1,3-oxathiolan-2-ylidene-, O,O-dimethyl ester