The Fifth Circuit has acknowledged that a Texas cocaine statute, on its face, is broader than federal drug statutes, because it also criminalizes offenses involving the position isomers of cocaine. However, the court found that the petitioner did not prove a realistic probability that Texas courts prosecute offenses involving position isomers of cocaine.
The full text of Alexis v. Barr can be found here:
http://www.ca5.uscourts.gov/opinions/pub/18/18-60748-CV0.pdf