The term di-methyl matrix was done to not draw as much attention as a bottle with the entire chemical name on it. If you're releasing a superdrol clone and then superdrol comes under fire, would you make your label the exact same as superdrol? I know I wouldn't. Simply a different name for the same thing. Now ergo, that is definitely a matrix because it is designed with two different isomers. This is just me though, so, take from it what you will.