DBCO-PEG4-GGFG-Exatecan (Repodatecan starting material)

antibody-drug conjugate linker payload intermediate

8-Bromo-1-octene

Pharmaceutical intermediate

3-Deoxy-3-acetylabiraterone-3-ene

Abiraterone acetate impurity intermediate

Tert-butyl 4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-carboxylate

pharmaceutical intermediate

1-Propyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Boronic ester for chemical synthesis

1,3,5-Trimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Boronic ester synthetic intermediate