In addition, Libya has stepped up its effort to purchase such precursor chemicals on the world market.

Diethylethanolamine can be used as a precursor chemical to procaine.

Approximately 90% of industrial precursor chemicals are synthesized using catalysts.

It lists some 50 key precursor chemicals that should be tightly controlled.

The gas can be produced through the mixing and processing of what are termed "precursor chemicals."

Today, civetone can be synthesized from precursor chemicals found in palm oil.

This technique minimizes the loss of precursor chemicals in case a step does not work as expected.

We found precursor chemicals that are used in the manufacture of the drug.

Brazil is also growing in importance as a source of the precursor chemicals used to manufacture cocaine.

When those labs went up, the explosion took out all but traces of precursor chemicals.