Property talk:P3640

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National Drug Code
pharmaceutical code issued by the Food and Drug Administration for every drug product (formulation) on the U.S. market. Includes a labeler code, product code and package code, unique for every drug product.

Description	A code issues by FDA for every drug product on the US market. Includes a labeler code, product code and package code, unique for every drug product.
Represents	National Drug Code (Q6972354)
Data type	External identifier
Domain	Medicine, chemistry (note: this should be moved to the property statements)
Allowed values	[0-9]{4,5}-[0-9]{3,4}
Example	vemurafenib (Q423111) → 50242-090 Depo-testosterone (Q47521458) → 0009-0417 Epifoam (Q47521557) → 0037-6824
Source	https://www.nlm.nih.gov/research/umls/rxnorm/docs/rxnormfiles.html
Formatter URL	https://ndclist.com/ndc/$1
Related to country	United States of America (Q30) (See 771 others)
See also	European Medicines Agency product number (P3637)
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 Mix'n'match (Report) Database reports/Constraint violations/P3640 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,906 Main statement 333 11.5% of uses Qualifier 3 0.1% of uses Reference 2,570 88.4% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P3640#Scope, hourly updated report, SPARQL

Format “[0-9]{4,5}-[0-9]{3,4}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P3640#Format, hourly updated report, 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/P3640#Entity types