C07H - Definition 
Definition statement
This subclass covers:
Compounds containing saccharide radicals, sugars and their derivatives, e.g.:
- Saccharides, deoxysugars, anhydrosugars and osones;
- Aminosugars, aza-, thio-, seleno- and telluro analogues;
- Sugar esters, sugar ethers, glucosides and cyclic acetals;
- Sugar derivatives containing acylic, carbocyclic or heterocyclic radicals;
- Sugar derivatives containing boron, silicon or a metal;
Nucleosides, nucleotides and nucleic acids;
Processes for the preparation of the above compounds.
Relationship between large subject matter areas
In class C07, the last place priority rule is used, i.e. in the absence of an indication to the contrary, a compound is classified in the last appropriate subclass. Hence, while individual heterocycle-containing amino acids are classified in C07D, peptides are generally classified in C07K. Similarly, compounds containing saccharide radicals, with the exception of polysaccharides, are classified in this subclass, and heterocyclic steroids are classified under C07J. Heterocycles incorporating elements other than C, H, halogen, N, O, S, Se, Te are classified in C07F.
This subclass is a function oriented entry for the compounds themselves and does not cover the application or use of the compounds under the subclass definition. For classifying such information other entries in IPC exist, for example:
- Compounds or compositions for preservation of bodies of humans, animals, plants, or parts thereof, as biocides, e.g. disinfectants, pesticides, herbicides, as pest repellents or attractants, and as plant growth regulators are classified in A01N.
- Preparations for medical, dental, or toilet purposes are classified in A61K.
Multiple classification
Biocidal, pest attractant, or plant growth regulatory activity of chemical compounds or preparations is further classified in subclass A01P.
Therapeutic activity of chemical compounds is further classified in subclass A61P.
Uses of cosmetics or similar toilet preparations are further classified in subclass A61Q.
References relevant to classification in this subclass
This subclass does not cover:
Derivatives of aldonic or saccharic acids | C07C, C07D |
Aldonic acids, saccharic acids | C07C 59/105, C07C 59/285 |
Cyanohydrins | C07C 255/16 |
Glycals | C07D |
Compounds of unknown constitution, glycosides | C07G |
Steroid glycosides | C07J |
Polysaccharides, derivatives thereof | C08B |
DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification | C12N 15/00 |
Using enzymes or microorganisms for the preparation of compounds containing saccharide radicals | C12P 19/00 |
Sugar industry | C13 |
Informative references
Attention is drawn to the following places, which may be of interest for search:
Brewing of beer | C12C |
Preparation of wine or other alcoholic beverages | C12G |
Measuring or testing processes involving nucleic acids | C12Q 1/68 |
Electrolytic or electrophoretic processes for the production of compounds. | C25B |
Special rules of classification
In this subclass, in the absence of an indication to the contrary, a compound is classified in the last appropriate place.
Glossary of terms
In this subclass, the following terms or expressions are used with the meaning indicated:
| Heterocyclic radical or hetero ring | These are considered to exclude saccharide radicals as defined above. |
| Polysaccharide | A compound having more than five saccharide radicals attached to each other by glycosidic linkages. |
| Saccharide radical | Radical derived from acyclic polyhydroxy-aldehydes or acyclic polyhydroxy-ketones, or from their cyclic tautomers, by removing hydrogen atoms or by replacing hetero bonds to oxygen by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium, in accordance with either of the following definitions: a) It consists of an uninterrupted carbon skeleton and oxygen atoms directly attached thereto, and is considered to be terminated by every bond to a carbon atom of a cyclic structure and by every bond to a carbon atom having three bonds to hetero atoms, e.g. ester or nitrile radicals, and contains within the carbon skeleton an unbranched sequence of at the most six carbon atoms in which at least three carbon atoms - at least two in the case of a skeleton having only four carbon atoms - have one single bond to an oxygen atom as the only hetero bond, and (i) in a cyclic or acyclic sequence, at least one other carbon atom has two single bonds to oxygen atoms as the only hetero bonds, or (ii) in an acyclic sequence, at least one other carbon atom has one double bond to an oxygen atom as the only hetero bond, the said sequence containing at the most one double bond, i.e. C=C or possibly ketalised C=O, in addition to the hetero bonds mentioned under (i) or (ii).b) It is also a radical derived from a radical defined in (a) by replacing at the most four of the specified hetero bonds to oxygen by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium. |