Finding and Verifying CAS Registry Numbers® on STN®
— March 1993 —
Appendix 9 — Display Fields
| Display Field Code | Display Field Content |
| AF | Alternate Molecular Formula |
| AR | Alternate Registry Number |
| CCI | Component Class Identifier |
| CCN | Condensed Chemical Name |
| CDES | Component Descriptor |
| Cl | Class Identifier |
| CIL | Component Isotope of Unknown Location |
| CM | Component Number |
| CMF | Component Molecular Formula |
| CN | Chemical Name (for up to 50 names) |
| COMP | Composition |
| CRN | Component Registry Number |
| DEF | Definition |
| DES | Descriptor |
| DR | Deleted Registry Number |
| FCN | Full Chemical Name (all available names) |
| FS | File Segment |
| IL | Isotope of Unknown Location |
| IN | CA Index Name |
| LC | Registry Number Locator |
| MF | Molecular Formula |
| PCT | Polymer Class Term |
| PR | Preferred Registry Number |
| REF | References in CApreviews, CA, and CAOLD |
| RN | Registry Number |
| RR | Replacing Registry Number |
| RSD | Ring System Data |
| SCN | Short Chemical Name |
| SR | Source of Registration |
| SRSD | Short Ring System Data |
| STR | Structure Diagram |