Clinical data
Trade names Climasol
AHFS/ International Drug Names
ATCvet code QN05CD90 (WHO)
Legal status
Legal status
CAS Number 59467-77-5
PubChem (CID) 68790
ChemSpider 62030
KEGG D07714
Chemical and physical data
Formula C18H13Cl2N3
Molar mass 342.222 g/mol
3D model (Jmol) Interactive image

Climazolam[1] (Ro21-3982) was introduced under licence as a veterinary medicine by the Swiss Pharmacutical company Gräub under the tradename Climasol.[2] Climazolam is a benzodiazepine, specifically an imidazobenzodiazepine derivative developed by Hoffman-LaRoche. It is similar in structure to midazolam and diclazepam and is used in veterinary medicine for anesthetizing animals.[3][4]


  1. US 4280957 - Imidazodiazepines and processes therefor
  3. Ganter M, Kanngiesser M (Aug 1991). "Effect of ketamine and its combinations with xylazine and climazolam on the circulation and respiration in swine". Zentralbl Veterinarmed A (in German). 38 (7): 501–509. PMID 1950241.
  4. Bettschart-Wolfensberger R, Taylor PM, Sear JW, Bloomfield MR, Rentsch K, Dawling S (Oct 1996). "Physiologic effects of anesthesia induced and maintained by intravenous administration of a climazolam-ketamine combination in ponies premedicated with acepromazine and xylazine". American Journal of Veterinary Research. 57 (10): 1472–1427. PMID 8896687.

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