1-[(2,6-Difluorophenyl)methyl]-5-[(dimethylamino)methyl]-3-(6-methoxypyridazin-3-yl)-6-(4-nitrophenyl)thieno[2,3-d]pyrimidine-2,4-dione

It’s a key building block in creating the complex thienopyrimidine structure of Relugolix. The compound 1-[(2,6-Difluorophenyl)methyl]-5-[(dimethylamino)methyl]-3-(6-methoxypyridazin-3-yl)-6-(4-nitrophenyl)thieno[2,3-d]pyrimidine-2,4-dione is a precursor or intermediate employed to synthesize Relugolix, a GnRH antagonist, in which the nitro group on the phenyl ring is typically modified (e.g., reduced to an amine, then reacted to form a urea) to form the final active drug.

API Name Relugolix
CAS No 1589503-96-7
Molecular Formula C27H22F2N6O5S
Molecular Weight 580.6 g/mol
Synonyms 1-[(2,6-difluorophenyl)methyl]-5-[(dimethylamino)methyl]-3-(6-methoxypyridazin-3-yl)-6-(4-nitrophenyl)thieno[2,3-d]pyrimidine-2,4-dione

Frequently Asked Questions