The preparing cartap by route of non-sodium cyanide was studied in the paper.

研究了巴丹的非氰化钠路线合，采用的合法工艺简单，原料易得。

It can also be prepared by reaction of bromochloromethane with sodium thiocyanate to obtain chloromethyl thiocyanate, and then it reacts with 2-mercapto-benzothiazole.

另一种2-巯基唑法是先将溴氯甲烷硫氰化钠反应生硫氰酸氯甲酯，然后硫氰酸氯甲酯2-巯基唑反应得到氰。