The substances detailed in this section are designated as being an immediate precursor as provided under the Act, §481.002(22):
  (1) Benzaldehyde;
  (2) Gamma-butyrolactone (other names include: GBL; dihydro-2(3H)-furanone; 1,2-butanolide; 1,4-butanolide; 4-hydroxybutanoic acid lactone; gamma-hydroxybutyric acid lactone);
  (3) Isosafrole;
  (4) 3,4-methylenedioxyphenyl-2-propanone;
  (5) N-methylephedrine, its salts, optical isomers, and salts of optical isomers;
  (6) N-methylpseudoephedrine, its salts, optical isomers, and salts of optical isomers;
  (7) Piperonal;
  (8) Safrole; and
  (9) Lithium metal removed from a battery and immersed in kerosene, mineral spirits, or similar liquid that prevents or retards hydration.

Source Note: The provisions of this §13.25 adopted to be effective November 6, 2016, 41 TexReg 8619