CAS numbers need to be validated for the ~4000 chemical pages. Since the only authoritative source is the American Chemical Society, SciFinder looks like the best bet. For various reasons (see previous IRC discussions), it is not practical for one editor to validate them all.
Founded in 1887 Zeitschrift für Physikalische Chemie covers the main developments in physical chemistry with emphasis on experimental research. It represents a combination of reaction kinetics and spectroscopy, surface research and electrochemistry, thermodynamics and structure analysis of matter in its various conditions.
G. Cristalli, A. Eleuteri, S. Vittori, R. Volpini, M. Lohse, and K. Klotz. J Med Chem, 35 (13):
2363-8(June 1992)Cristalli, G Eleuteri, A Vittori, S Volpini, R Lohse, M J Klotz,
K N Research Support, Non-U.S. Gov't United states Journal of medicinal
chemistry J Med Chem. 1992 Jun 26;35(13):2363-8..