(1) A substance mentioned in schedule 3 is prescribed.
(2) The following substances (each of which is a related precursor ) are also prescribed:
(a) a preparation, admixture, extract or other substance containing any proportion of a substance mentioned in schedule 3;
(b) a substance that is 1 of the following in relation to a substance mentioned in schedule 3:
(i) acetal;
(ii) acetate;
(iii) acid chloride;
(iv) amide;
(v) anhydride;
(vi) diol;
(vii) epoxide;
(viii) ester;
(ix) ether;
(x) halogen substituent;
(xi) hydroxide;
(xii) imine;
(xiii) isomer;
(xiv) ketal;
(xv) nitrile;
(xvi) oxime;
(xvii) salt;
(c) any other analogue or derivative of a substance mentioned in schedule 3.