2-Chloro-N-ethyl-9-isopropyl-9H-purin-6-amine

In the title compound, C₁₀H₁₄ClN₅, the purine ring system is essentially planar, with an r.m.s. deviation from the least-squares plane defined by the nine constituent atoms of 0.0063 (11) Å. In the crystal, mol­ecules are linked by weak N—H...N and C—H...π inter­actions.

Diphenyl (methyl­amido)­phosphate

The N—H bond in the title compound, C₁₃H₁₄NO₃P, is syn-oriented relative to the P=O bond. The N atom deviates somewhat from planarity, the sum of the bond angles being 353.3°. The P atom has a distorted tetra­hedral coordination; its bond angles are in the range 93.96 (5)–116.83 (6)°. In the crystal, mol­ecules form centrosymmetric dimers through P=O...H—N hydrogen bonds.