622-58-2
对甲苯异氰酸酯
+
2899-00-5
3-methyl-2-piperidinylbenzothiazolidine
→
62689-07-0
3-methyl-1',3'-bis(4-methylphenyl)spiro[1,3-benzothiazole-2,5'-imidazolidine]-2',4'-dione