isomer
Defined in 1 dictionary — U.S. Code
United States Code
21 U.S.C. § 802 — as used in this subchapter
The term “isomer” means the optical isomer, except as used in schedule I(c) and schedule II(a)(4). As used in schedule I(c), the term “isomer” means any optical, positional, or geometric isomer. As used in schedule II(a)(4), the term “isomer” means any optical or geometric isomer.