The neutral triterpenes of the bark of Picea sitchensis (Sitka spruce).
D002855:Chromatography, Thin Layer; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D010944:Plants / Q000032:analysis*; D013053:Spectrophotometry; D013057:Spectrum Analysis; D013729:Terpenes / Q000302:isolation & purification*
D013729:Terpenes