N-(2,2-dimethyl-4-oxothietan-3-yl)acetamide

2-methyl-4-propan-2-ylidene-1,3-oxazol-5-one

2,5,5-trimethyl-1,3-thiazolidine-4-carboxylic acid

L-5,5-二甲基噻唑烷-4-羧酸

5,5-二甲基-1,3-噻唑烷-3-鎓-4-羧酸酯