noun
synthetic chemistry
The branch of chemistry concerned with synthesizing compounds, often contrasted with analytical or natural-product chemistry.
彼は大学で合成化学を専攻している。
He is majoring in synthetic chemistry at university.
合成化学の進歩により、新しい薬が次々と開発されている。
Advances in synthetic chemistry are leading to the development of new drugs one after another.
Compound of 合成 (ごうせい, 'synthesis') and 化学 (かがく, 'chemistry'). The term is a direct calque from English 'synthetic chemistry'.