myrtecaine myrtecaine myrtecaine (nopoxamine), sold as a combination product with diethylamine salicylate under the trade name algesal and algésal suractivé among others, is a local anaesthetic in the form of a topical cream, or with laurilsulfate in rubefacient preparations. it is used to treat muscle strains, tendinitis or ligament sprains and joint pain. it is a surface anaesthetic, adds to the analgesic and anti-inflammatory actions of diethylamine salicylate by facilitating its penetration. also myrtecaine has a muscle relaxant effect. myrtecaineclinical datatrade namesalgesal, algésal suractivéother namesnopoxamineatc codenoneidentifiers iupac name 2-hept-2-enyl)ethoxy]-n,n-diethylethanamine cas number7712-50-7pubchem cid71851chemspider64868unii9902116282chebichebi:135096echa infocard100.028.851 chemical and physical dataformulac17h31nomolar mass265.441 g·mol−13d model (jsmol)interactive image smiles ccn(cc)ccoccc1=ccc2cc1c2(c)c inchi inchi=1s/c17h31no/c1-5-18(6-2)10-12-19-11-9-14-7-8-15-13-16(14)17(15,3)4/h7,15-16h,5-6,8-13h2,1-4h3key:bzryybwnoualtq-uhfffaoysa-n