Transition states are commonly molecular entities involving an unstable number of bonds and/or unstable geometry.

A reaction involving one molecular entity is called unimolecular.

A reaction involving two molecular entities is called bimolecular.

This molecular entity is very unstable and appears in chemical reactions as a reactive intermediate.

Rather than developing new molecular entities, KV researches different modes of drug delivery.

The most rigorous requirements apply to "new molecular entities": drugs that are not based on existing medications.

It is usually a geometric parameter that changes during the conversion of one or more molecular entities.

Molecularity in chemistry is the number of colliding molecular entities that are involved in a single reaction step.

A reaction involving three molecular entities is called termolecular.

This center is thus stereogenic (i.e., a grouping within a molecular entity that may be considered a focus of stereoisomerism).