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CAS Registry Number

CAS Number

Identifier for a chemical substance or compound per Chemical Abstract Service's Registry database.

Statements about CAS Registry Number

Instance Of

Wikidata Property to Identify Substances

Wikidata Property for an Identifier Having a Checksum

Format as a Regular Expression

[1-9]\d{1,6}-\d{2}-\d

Property Constraint

Format Constraint

Format as a Regular Expression

:[1-9]\d{1,6}-\d{2}-\d

Constraint Status

:

Mandatory Constraint

Distinct-Values Constraint

Exception to Constraint

:

Hydrazine Sulfate

Exception to Constraint

:

Hydrogen Bromide

Exception to Constraint

:

Hydrobromic Acid

Single-Value Constraint

Constraint Status

:

Suggestion Constraint

Exception to Constraint

:

4-Methoxyamphetamine

Exception to Constraint

:

Methylenedioxyethamphetamine

Exception to Constraint

:

Exception to Constraint

:

Magnesium Orotate

Exception to Constraint

:

Exception to Constraint

:

Copper Ditetrafluoroborate

Exception to Constraint

:

Exception to Constraint

:

Exception to Constraint

:

Exception to Constraint

:

Gamma-Valerolactone

Exception to Constraint

:

Exception to Constraint

:

Nickel(II) Sulfide

Exception to Constraint

:

(Z)-Triflumizole

Exception to Constraint

:

Exception to Constraint

:

Trichloroethane

Exception to Constraint

:

Exception to Constraint

:

Allowed Qualifiers Constraint

Constraint Status

:

Mandatory Constraint

:

Reason for Deprecated Rank

:

Reason for Preferred Rank

:

Intended Subject of Deprecated Statement

Property Scope Constraint

Constraint Status

:

Mandatory Constraint

:

:

Single-Best-Value Constraint

Allowed-Entity-Types Constraint

Item of Property Constraint

:

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