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| | PS Database Summary Sheet |
 | | For indexed pharmaceutical substances, the ATC code, therapeutic use, chemical name, molecular formula, CAS Registry Number, EINECS Number, lethal dose, information on derivatives, and substance class are given. |
 | | L-numbers of a structure built using the S L1 AND L2 NOT L3 STRUCTURE command or uploaded from STN |
 | | Multiple codes must be separated by spaces or commas, e.g., D L1 1-5 FRM TRD. |
| www.cas.org /ONLINE/DBSS/psss.html (1400 words) |
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