4-O-(2-acetamido-3-methylbutyl) 1-O-methyl but-2-enedioate;4-O-[2-(tert-butylcarbamoylamino)-3-methylbutyl] 1-O-methyl but-2-enedioate;4-O-[2-(cyclohexylcarbamoylamino)-3-methylbutyl] 1-O-methyl but-2-enedioate;4-O-[2-(cyclohexylmethylcarbamoylamino)-3-methylbutyl] 1-O-methyl but-2-enedioate;4-O-[2-(ethylcarbamoylamino)-3-methylbutyl] 1-O-methyl but-2-enedioate;1-O-methyl 4-O-[3-methyl-2-(methylcarbamoylamino)butyl] but-2-enedioate;1-O-methyl 4-O-[3-methyl-2-(2-methylpropylcarbamoylamino)butyl] but-2-enedioate;1-O-methyl 4-O-[3-methyl-2-(phenylcarbamoylamino)butyl] but-2-enedioate;1-O-methyl 4-O-[3-methyl-2-(propan-2-ylcarbamoylamino)butyl] but-2-enedioate

pharmaceutical intermediate

3-(4-FLUOROPHENYL)-2-METHYLPROPIONYLCHLORIDE

pharmaceutical intermediate

6-acetyl-2-chloro-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one

Pharmaceutical intermediate for palbociclib synthesis

2-Chloro-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one

pharmaceutical intermediate