EXPLICIT CHEMICAL NAME
4. Subject to section 6, where all or part of the explicit chemical name of a substance can be described with a structural diagram, any of the following is a single distinctive element of that name or part:
(a) a locant;
(b) a locant and multiplicative prefix that together specify the position and number of a chemical group;
(c) the name of a chemical group;
(d) the name of the parent structure and the locant of a chemical group bonded to the parent structure; or
(e) in the case of a salt, the name and multiplicative prefix of a single cation or anion of the salt.
- SOR/98-416, s. 1(E).
5. (1) Subject to subsection (2) and section 6, where the explicit chemical name of a substance cannot be described with a structural diagram, either of the following is a single distinctive element of that name:
(a) a constituent of the name that describes a complex mixture of a known class of chemicals including any substance that is recorded in the Chemical Abstracts Chemical Substance Index as an indefinite or general derivative of a specific chemical substance; or
(b) a constituent of the name that describes a complex mixture of an unknown class of chemicals including a substance that is recorded or is capable of being recorded in the Chemical Abstracts General Subject Index and can be named only by using descriptive or illustrative terms.
(2) For the purposes of subsection (1), where a part of the explicit chemical name can be described with a structural diagram, the masking of that part shall be carried out in accordance with section 4.
6. Where a substance referred to in section 4 or 5 contains a chemical group that includes a carbon atom possessing more than a single valence, the name of the chemical group shall not be masked where the carbon atom is
(a) attached directly to an acyclic carbon atom; or
(b) included within a ring system.
7. The name of a parent structure of a substance referred to in section 4 or 5 may be masked only by one of the following non-descriptive terms, as appropriate:
(a) alkyl or alkane;
(b) alkenyl or alkene;
(c) alkynyl or alkyne;
(d) carbomonocyclic or carbomonocycle;
(e) carbopolycyclic or carbopolycycle;
(f) heteromonocyclic or heteromonocycle; or
(g) heteropolycyclic or heteropolycycle.
EXPLICIT BIOLOGICAL NAME
8. Where all or any part of the name of a substance is an explicit biological name, any of the following is a single distinctive element of that explicit biological name:
(a) the genus name;
(b) the species name;
(c) the strain name;
(d) the common biological name;
(e) the source;
(f) the culture history;
(g) the phenotypic or genotypic characteristics;
(h) the use; or
(i) any other pertinent descriptive information.
- Date modified: