In continuation of our reports on the chemical constituents of Croton tonkinensis Gagnep. (Euphorbiaceae) [1] this paper deals with the isolation and structure elucidation of two long chain alkyl alcohols. Two compounds 1 and 2 were isolated by repeated silica gel column chromatography of the n-hexane soluble fraction obtained from the methanol extract of the dried leaves of C. tonkinensis by liquid - liquid fractionation [2]. The long aliphatic chains of both compounds 1 and 2 were characterized by the 1 H and 13 C NMR spectra: H (3H, t, J = Hz), C (q) for the terminal methyl groups; H (m) and - (m), C - (all t) for the chain methylene groups.
