1,3-Butadiene, 2-methyl-, homopolymer, of cis-1,4-configuration, depolymd 1,3-Butadiene, 2-methyl-, homopolymer, of cis-1,4-configuration, depolymd. 2-Methyl-1,3-butadiene, homopolymer (as latex) 68425-13-8 Natural rubber, depolymerized