reproterol reproterol reproterol is a short-acting β2 adrenoreceptor agonist used in the treatment of asthma. reproterolclinical dataahfs/drugs.cominternational drug namesroutes ofadministrationinhalation (mdi), ivatc coder03ac15 (who) legal statuslegal status de: § 48 amg/§ 1 mpav (prescription only) identifiers iupac name (rs)-7-(3-propyl)-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione cas number54063-54-6 ypubchem cid25654chemspider23898 nunii11941yc6rnkeggd08474 ychemblchembl1095607 ncomptox dashboard (epa)dtxsid8023553 echa infocard100.053.579 chemical and physical dataformulac18h23n5o5molar mass389.412 g·mol−13d model (jsmol)interactive image smiles cn1c2=c(c(=o)n(c1=o)c)n(c=n2)cccncc(c3=cc(=cc(=c3)o)o)o inchi inchi=1s/c18h23n5o5/c1-21-16-15(17(27)22(2)18(21)28)23(10-20-16)5-3-4-19-9-14(26)11-6-12(24)8-13(25)7-11/h6-8,10,14,19,24-26h,3-5,9h2,1-2h3 nkey:wvlaakxaspcbgt-uhfffaoysa-n n ny (what is this?) (verify) it was patented in 1965 and came into medical use in 1977. stereochemistry reproterol contains a stereocenter and is chiral. there are thus two enantiomers, the (r)-form and the (s)-form. the commercial preparations contain the drug as a racemate, an equal mixture of the two enantiomers. enantiomers of reproterol (r)-reproterol cas number: 210710-33-1 (s)-reproterol cas number: 210710-34-2