rauwolscine rauwolscine rauwolscine, also known as isoyohimbine, α-yohimbine, and corynanthidine, is an alkaloid found in various species within the genera rauvolfia and corynanthe (including pausinystalia). it is a stereoisomer of yohimbine. rauwolscine is a central nervous system stimulant, a local anesthetic and a vague aphrodisiac. rauwolscineclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: uncontrolled identifiers iupac name 17α-hydroxy-20α-yohimban-16β-carboxylic acid methyl ester cas number131-03-3 n 6211-32-1 (hcl)pubchem cid643606iuphar/bps136chemspider558737 yuniit4lj7lu45wchebichebi:48562 ychemblchembl10347 ycomptox dashboard (epa)dtxsid2045608 echa infocard100.004.553 chemical and physical dataformulac21h26n2o3molar mass354.450 g·mol−1 inchi inchi=1s/c21h26n2o3/c1-26-21(25)19-15-10-17-20-14(13-4-2-3-5-16(13)22-20)8-9-23(17)11-12(15)6-7-18(19)24/h2-5,12,15,17-19,22,24h,6-11h2,1h3/t12-,15+,17+,18+,19+/m1/s1 ykey:blgxfzzntvwlay-dirvclhfsa-n y ny (what is this?) (verify) rauwolscine acts predominantly as a α2-adrenergic receptor antagonist. it has also been shown to function as a 5-ht1a receptor partial agonist and 5-ht2a and 5-ht2b receptor antagonist.