Talk:Q11173
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Autodescription — chemical compound (Q11173)
description: pure chemical substance consisting of two or more different chemical elements
- Useful links:
- View it! – Images depicting the item on Commons
- Report on constraint conformation of “chemical compound” claims and statements. Constraints report for items data
For help about classification, see Wikidata:Classification.
- Parent classes (classes of items which contain this one item)
- Subclasses (classes which contain special kinds of items of this class)
- ⟨
chemical compound⟩ on wikidata tree visualisation (external tool)(depth=1) - Generic queries for classes
Data to provide for this type of item
| Property | Data type | description | required |
|---|---|---|---|
| instance of (P31) | Item | that class of which this subject is a particular example and member; different from P279 (subclass of); for example: K2 is an instance of mountain; volcano is a subclass of mountain (and an instance of volcanic landform) . Possible values: chemical compound (Q11173) | yes |
| has part(s) (P527) | Item | part of this subject; inverse property of "part of" (P361). See also "has parts of the class" (P2670). . Possible values: chemical element (Q11344) | yes |
| CAS Registry Number (P231) | External identifier | identifier for a chemical substance or compound per Chemical Abstract Service's Registry database | yes |
| chemical structure (P117) | Commons media file | image of a representation of the structure for a chemical compound | no |
| RTECS number (P657) | External identifier | chemical identifier from the Registry of Toxic Effects of Chemical Substances | no |
| Library of Congress authority ID (P244) | External identifier | Library of Congress name authority (persons, families, corporate bodies, events, places, works and expressions) and subject authority identifier [Format: 1-2 specific letters followed by 8-10 digits (see regex). For manifestations, use P1144] | no |
| E number (P628) | External identifier | number for food additives that are legal in the European Union | no |
| NIOSH Pocket Guide ID (P1931) | String | Identifier for a chemical in the NIOSH Pocket Guide to Chemical Hazards | no |
| isomeric SMILES (P2017) | String | dedicated SMILES for isomer | no |
| EC number (P232) | External identifier | identifier for a chemical compound per EINECS or ELINCS | yes |
| canonical SMILES (P233) | String | Simplified Molecular Input Line Entry Specification (canonical format) | yes |
| InChI (P234) | External identifier | International Chemical Identifier | yes |
| InChIKey (P235) | External identifier | A hashed version of the full standard InChI - designed to create an identifier that encodes structural information and can also be practically used in web searching. | yes |
| chemical formula (P274) | String | description of chemical compound giving element symbols and counts | yes |
| ATC code (P267) | External identifier | therapeutic chemical identification code per ATC | no |
| ChEMBL ID (P592) | External identifier | identifier from a chemical database of bioactive molecules with drug-like properties | yes |
| UNII (P652) | External identifier | identifier issued by the FDA / Unique Ingredient Identifier | yes |
| ChemSpider ID (P661) | External identifier | identifier in a free chemical database, owned by the Royal Society of Chemistry | yes |
| PubChem CID (P662) | External identifier | identifier from database of chemical molecules and their activities in biological assays (Compound ID number) | yes |
| ZVG number (P679) | External identifier | identifier of GESTIS database of the Institute for Occupational Safety and Health | yes |
| ChEBI ID (P683) | External identifier | identifier from database and ontology of molecular entities focused on 'small' chemical compounds | yes |
Union and disjoint queries
- Instances of chemical compound (Q11173)
that are instances of two (or more) of the classes: [1] - Instances of chemical compound (Q11173) that are instances of none of the classes inorganic compound (Q190065) and organic compound (Q174211) [2]
- See also
- This documentation is generated using
{{Item documentation}}.
Superset (set theory (Q12482))[edit]
chemical compound (Q11173) - set (Q36161), superset - union (Q17853087) --Fractaler (talk) 07:54, 23 September 2016 (UTC)
- @Fractaler: Please have another logic: union (Q17853087) = human action according to the item definition, what is the link between chemical compound and an human action ? Nothing. I understand what you are doing but for that kind of classification you need to use another property. I can say that chemical compound (Q11173) is an instance of class too but if we use one property for different classifications, the classification systems are useless. There is a need to have a global approach for that problem so perhaps starting to classify everything it is good to define how we should classify. Snipre (talk) 08:38, 23 September 2016 (UTC)
- Sorry, I don't understand. Please subsets for the set human action according to the item definition. I don't use "instance of", "class" and so on. Only "subset" → "set" → "superset" --Fractaler (talk) 08:53, 23 September 2016 (UTC)
- @Fractaler: You used instance of (P31) and union (Q17853087) (see your edit here). Nothing related to "subset" → "set" → "superset": so if you use union (Q17853087) please look at the definition of union (Q17853087). Snipre (talk) 11:34, 23 September 2016 (UTC)
- All related to the Set theory ("subset" → "set" → "superset"): set union (Q17853087) (=set "result of the act of combine several entities to form one"), set chemical compound (Q11173) (=set "pure chemical substance consisting of two or more different chemical elements") and so on. Set "result of the act of combine" consists of subset (1 -chemical, 2 - biological, 3 - physical, and so on) "substance consisting of". --Fractaler (talk) 11:57, 23 September 2016 (UTC)
- @Fractaler: You used instance of (P31) and union (Q17853087) (see your edit here). Nothing related to "subset" → "set" → "superset": so if you use union (Q17853087) please look at the definition of union (Q17853087). Snipre (talk) 11:34, 23 September 2016 (UTC)
- Sorry, I don't understand. Please subsets for the set human action according to the item definition. I don't use "instance of", "class" and so on. Only "subset" → "set" → "superset" --Fractaler (talk) 08:53, 23 September 2016 (UTC)
the name of a compound may refer to the respective molecular entity or to the chemical species, e.g. methane, may mean a single molecule of CH4 (molecular entity) or a molar amount, specified or not (chemical species), participating in a reaction. The degree of precision necessary to describe a molecular entity depends on the context. For example 'hydrogen molecule' is an adequate definition of a certain molecular entity for some purposes, whereas for others it is necessary to distinguish the electronic state and/or vibrational state and/or nuclear spin, etc. of the hydrogen molecule --Fractaler (talk) 07:55, 15 December 2017 (UTC)