THE TITLE COMPOUND [SYSTEMATIC NAME: (1R,4aS,10aR)-7-iso-prop-yl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octa-hydro-phen-anthrene-1-carboxylic acid], C(20)H(28)O(2), has been isolated from disproportionated rosin which is obtained by isomerizing gum rosin with a Pd-C catalyst.. Two crystallographically independent mol-ecules exist in the asymmetric unit. In each mol-ecule, there are three six-membere...

The title compound, C14H17NO4, features an epoxide-O atom fused to a pyrrolidyl ring, the latter having an envelope conformation with the N atom being the flap. The 4-meth-oxy-phenyl group is orthogonal to [dihedral angle = 85.02 (6)°] and lies to the opposite side of the five-membered ring to the epoxide O atom, while the N-bound ethyl ester group (r.m.s. deviation of the five fitted atoms = 0...

Gondorukem adalah hasil olahan destilasi uap getah sadapan batang pinus sebagai bahan baku utama untuk pembuatan rosin (non-kristal). Rosin resin yang diekstrak dari pohon pinus, berwarna kuning pucat hingga tua. Pemakaian banyak digunakan di berbagai industri diantaranya, tinta cetak, cat, ban, dan kertas, saat ini Indonesia masih mendatangkan negara lain, maka itu pengelolaan serta pemanfaata...

Glass fiber reinforced Polymer matrix composites (PMCs) have a complex set of properties - high specific strength and hardness, good corrosion chemical resistance, most all low relative weight, making them the preferred material over metallic materials in number industries (aircraft, boat building, renewable energy facilities many others). The main aim present work was reduced to obtaining PMCs...