It is a Class 5 felony for any person who is a registrant knowingly to distribute a controlled drug or substance classified in Schedules I or II, in the course of his legitimate business, except pursuant to an order form as required by this chapter.

Source: SL 1970, ch 229 , § 10 (e) (1); SDCL Supp, § 39-17-104; SL 1977, ch 189 , § 120; SL 1977, ch 190 , § 403.