Data Item _pdbx_investigation_entity_nonpoly.cas_identifier
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General 
- Item name
- _pdbx_investigation_entity_nonpoly.cas_identifier
- Category name
- pdbx_investigation_entity_nonpoly
- Attribute name
- cas_identifier
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
This Chemical Abstracts Service (CAS) identifier for the small molecule component.
Data Type 
- Data type code
- text
- Data type detail
- text item types / multi-line text ...
- Primitive data type code
- char
- Regular expression
- [][ \n\t()_,.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*