title: 6-Benzyl 4-ethyl 2-chloro-5,6,7,8-tetra-hydro-pyrido[4,3-d]pyrimidine-4,6-di-carboxyl-ate.
abstract: In the title compound, C(18)H(18)ClN(3)O(4), the dihedral angle between the pyrimidine ring and the N-bonded ester grouping is 56.27 (7)° and the dihedral angle between the aromatic rings is 11.23 (7)°.
authors: Microscale Science Institute, Weifang University, Weifang 261061,  People's Republic of China.
authors: Huan-Mei
authors: HM
authors: Guo