|CDX Constant Name:||kCDXObj_RegistryNumber|
|CDX Constant Value:||0x800C|
|Contained by objects:|
|First written/read in:||(not written/read)|
A Registry Number represents a registry or catalog number, along with the name of the authority which issued the number.
The Number and Authority properties are required, but there are no required objects.
|A registry or catalog number of a molecule object.|
|A string that specifies the authority which issued a registry or catalog number. Some examples of registry authorities are CAS, Beilstein, Aldrich, and Merck.|