MI Hossain,
MMH Bhuiyan - Journal of Scientific Research, 2009 - researchgate.net
Abstract Fused pyrimidines, 8, 9-dimethyl [1, 2, 4] triazolo [4, 3-c] thieno [3, 2-e] pyrimidine 5,
3, 8, 9-trimethyl [1, 2, 4] triazolo [4, 3-c] thieno [3, 2-e] pyrimidine 6, 4-benzylidinehydrazono …