title: 7-Chloro-5-(2-ethoxy-phen-yl)-1-methyl-3-propyl-2,6-dihydro-1H-pyrazolo[4,3-d]pyrimidine.
abstract: In the title compound, C(17)H(21)ClN(4)O, the benzene ring is oriented at dihedral angles of 1.59 (3) and 1.27 (3)° with respect to the pyrimidine and pyrazole rings, while the dihedral angle between the pyrimidine and pyrazole rings is 0.83 (3)°. An intra-molecular N-H⋯O hydrogen bond results in the formation of a planar (r.m.s. deviation 0.004 Å) six-membered ring.
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technolgy, Xinmofan Road No. 5 Nanjing, Nanjing 210009, People's Republic of China.
authors.forename: Ming-Qiu
authors.initials: MQ
authors.lastname: Zhou
authors.forename: Kai
authors.initials: K
authors.lastname: Zhu
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Lv
authors.forename: Ping-Fang
authors.initials: PF
authors.lastname: Han
authors.forename: Ping
authors.initials: P
authors.lastname: Wei