1,132,086. Pyrimidine derivatives. F. HOFFMANN-LA ROCHE &; CO. A.G. 5 Nov., 1965 [12 Nov., 1964; 7 May, 1965], No. 58794/67. Divided out of 1,132,082. Heading C2C. [Also in Division A5] 5 - (2,4,5 - Trimethoxy-, 2,4,5-trichloro- and 4,5 - dimethoxy - 2 - methyl - benzyl) - 2,4 - diaminopyrimidine and their acid addition salts are prepared by the process of Specification 1,132,082.