Polyisoprene, cis average Mw ~38,000 by GPC, Made froM natural rubber;Polyisoprene, cis 97% cis-1,4;Polyisoprene, cis average Mw ~35,000 by GPC, made from synthetic rubber;POLY(ISOPRENE), CIS, AVERAGE M.W. 800.000;POLYISOPRENE, CIS, AVERAGE MW CA. 40,000 (GPC) (MADE FROM SYNTHETIC RUBBER);POLYISOPRENE, CIS, AVERAGE MW CA. 38,000 (GPC) (MADE FROM NATURAL RUBBER);cis-Polyisopreneaveragemwca.38,000(gpc);madefromnaturalrubber
