My new pen tablet is very easy to use.

His new novel is full of suspense, and once you start reading, you can't stop.

This new compilation of textbooks is packed with the latest information.

He issued instructions to newly organize the troops.

Pentaerythritol tetranitrate is a type of explosive and is very dangerous.

Ketopentose is a type of monosaccharide with five carbon atoms.

Aldopentose is a type of carbohydrate, an aldose with five carbon atoms.

Pentose is a type of monosaccharide, such as ribose and xylose.

My pen pal lives in France.

I used pentyne in an organic chemistry experiment.