2-Chloro-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one: A Crucial... In modern pharmaceutical research, specialized intermediates like 2-Chloro-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one play a key role in unlocking t... vidgastech .