different between fumarate vs freebase

English

Etymology

fumaric +? -ate

Noun

fumarate (plural fumarates)

1. Any salt or ester of fumaric acid; they are produced in the body as part of the urea cycle.

English

Alternative forms

• free base

Etymology

free +? base

Noun

freebase (countable and uncountable, plural freebases)

1. (chemistry) The purified, dry form of an amine, especially an alkaloid natural product, that is normally used in solution.
   • 1987, Richard Seymour, David Elvin Smith, The Physician's Guide to Psychoactive Drugs, page 75,

     The freebase is heated in a retort, foil, or other container and the vapor is inhaled as the freebase vaporizes.

   • 2007, Jared Ledgard, A Laboratory History of Narcotics, Volume 1: Amphetamines and Derivatives, page 108,

     Note: this freebase methedrine will actually be a mixture of the DL and L-forms, from which the L-form is the most common used in the preparation of methamphetamine.

2. (specifically) The purified, dry form of certain illegal drugs, especially cocaine.

Verb

freebase (third-person singular simple present freebases, present participle freebasing, simple past and past participle freebased)

1. To purify a drug by crystallization.
2. To use a purified drug, especially cocaine, by heating it and inhaling the fumes produced.

See also

• crack cocaine