3-(2-hydroxyethyl)-3-methyl-1-propyl-1-nitrosothiourea

碳酸二乙酯

2,2,9-trimethyl-1,6-dioxa-3,4,9-triazaspiro[4.4]non-3-ene

methyl-carbamic acid-(2-chloro-ethyl ester)

1-(2-chloroethyl)-3-(2-hydroxyethyl)-3-methy-1-nitrosourea