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Published online by Cambridge University Press: 22 June 2017
Ambroperuvin is a new pseudoguaianolide isolated from Ambrosia peruviana Willd., a plant used in traditional medicine in Venezuela. The analysis of the X-ray powder pattern being reported led to an orthorhombic unit cell with space group P212121 and cell parameters a = 15.999(6) Å, b = 11.263(2) Å, c = 9.112(2) Å. No detectable impurities were observed.