Four new neo-lignans were isolated from the chloroform portion of 70% ethanol extract of the seed crusts of Trewia nudiflora L., and were determined to be 9’-
SBRIn early February 2009,because of the tensesupply of oil-extended SBR (styrene-butadierierubber) in domestic market,China’s oilextendedSBR prices rose rapi