Cyclononane is a compound often used in organic chemistry.

In organic chemistry, cyclodecane is a cyclic saturated hydrocarbon consisting of ten carbon atoms.

This compound is called cycloheptadecane and is often used in organic chemistry.

In organic chemistry, a cycloalkane is a compound with a structure in which carbon atoms are linked in a ring.

The concert at the Rose Bowl was wonderful.

A large gathering of fans was at the concert.

A roadrunner can run very fast.

Tyrosine is one of the important amino acids.

It's difficult to solve this hexagonal puzzle.

Mr. Rokkaku is my best friend.