Property talk:P1578

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Gmelin number
identifier for inorganic chemical compounds, in the Gmelin database

Description	Unique identifier for inorganic chemical compounds
Data type	External identifier
Template parameter	|Gmelin= in en:Template:Chembox - Template:Chembox (Q52426)
Domain	According to this template: chemical compound (Q11173) According to statements in the property: type of chemical entity (Q113145171), chemical element (Q11344), group of chemical entities (Q55640599) or simple substance (Q2512777) When possible, data should only be stored as statements
Allowed values	[1-9][0-9]{3,6}
Example	acetone (Q49546) → 1466 oxidoaluminium (Q133767) → 349 N-methylformamide (Q138742) → 917
Tracking: usage	Category:Pages using Wikidata property P1578 (Q47455026)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P1578 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 3,113 Main statement 3,110 >99.9% of uses Qualifier 3 <0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “type of chemical entity (Q113145171), chemical element (Q11344), group of chemical entities (Q55640599), simple substance (Q2512777)”: item must contain property “instance of (P31)” with classes “type of chemical entity (Q113145171), chemical element (Q11344), group of chemical entities (Q55640599), simple substance (Q2512777)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1578#Type Q113145171, Q11344, Q55640599, Q2512777, SPARQL

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1578#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1578#Unique value, SPARQL (every item), SPARQL (by value)

Format “[1-9][0-9]{0,6}”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1578#Format, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1578#Entity types

This property is being used by: uk:Шаблон:Речовина Ідентифікатори ca:Plantilla:Identificadors química Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)