niobium,trichlorooxobis,tetrahydrofuran,furan
Furan
90717-52-51,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, 1,3-isobenzofurandione and nonanedioic acid
72055-90-47-Acetoxy-6-[[(2,3-dimethyloxiran-2-yl)carbonyl]oxy]-1a,2,3,6,7,7a,8,9,10a,10b-decahydro-1a-methyl-8-methylene-9-oxooxireno[9,10]cyclodeca[1,2-b]furan-5-carboxylic acid methyl ester