Ketorolac

Formula : C15-H13-N-O3
CAS : 74103-06-03 

A pyrrolizine carboxylic acid derivative structurally related to INDOMETHACIN. It is an NSAID and is used principally for its analgesic activity. (From Martindale The Extra Pharmacopoeia, 31st ed)

Ketorolac tromethamine

Formula : C15-H13-N-O3.C4-H11-N-O3
CAS : 74103-07-04 

A pyrrolizine carboxylic acid derivative structurally related to INDOMETHACIN. It is a non-steroidal anti-inflammatory agent used for analgesia for postoperative pain and inhibits cyclooxygenase activity.