Compounds containing acyl groups play an important role in organic chemistry.

The allyl group plays an important role in organic chemistry.

Kihan is my best friend.

The Labor Standards Inspection Office (Rōdō Kijun Kantokusho), or 'Rōki' for short, plays a crucial role in protecting the rights of workers.

This organism has a very complex anlage in the early stages of development.

He likes to take a walk in the park at dusk.

He ended up spoiling the ship for a ha'p'orth of tar because he didn't pay back a small debt.

Please check the information of the resident's basic kana.

This compound contains a sulfhydryl group.

Compounds containing a benzyl group are often used in organic chemistry research.