... Replacement of the ethyls by meth- yls causes an increase of 93" in melting point and a large reduction in solubility in organic solvents. ... Nauk SSSR, 97, 91 (1954); Chem. Abstr., 49,8793e (1955). ... (8) It. HF llanske, Can. J . Res., 5 , 529 (1931). ...