Whether the substance is an immediate precursor of a controlled substance.

The dry run is part of the rehearsal for a terrorist act, and is often the immediate precursor to the attack.

Yet he often worried about being taken seriously as an artist and, for him, serious meant abstraction, the art of his immediate precursors.

Legal reform was a prerequisite for social change, but not automatically the immediate precursor of it.

Finally, this immediate precursor is reacted with sulfur to form VX.

It is an intermediate in the metabolism of histidine, with the immediate precursor being formiminoglutamic acid.

However, their character names and families were different, so this series cannot technically be seen as an immediate precursor to the later shows.

The more immediate precursors of contemporary mobilities research emerged in the 1990s (Cresswell 2010, 551).

It assumes that artists are primarily concerned - whether to emulate or to rebel - with the texts of their immediate precursors.

It is the immediate precursor of a normal erythrocyte.