title: 25S-Spirost-4-ene-3, 12-dione, A New Sapogenin from Kallstroemia maxima.
authors.affiliation: Departamento de Quimica, Instituto Tecnologico y de Estudios Superiores de Monterrey, Monterrey, N. L., Sucursal de Correos "J", 64849 Mexico.
authors.forename: X A
authors.initials: XA
authors.lastname: Dominguez
authors.forename: W H
authors.initials: WH
authors.lastname: Watson
authors.forename: S
authors.initials: S
authors.lastname: Garcia
authors.forename: I A
authors.initials: IA
authors.lastname: Davila