MAMMALIAN EXOCRINE SECRETIONS .9. CONSTITUENTS OF PREORBITAL SECRETION OF ORIBI, OUREBIA, OUREBI

Using gas chromatography-mass spectrometry in conjunction with ancilla ry techniques such as chemical ionization with different reactant gase s, determination of the position of double bonds by means of dimethyl disulfide derivatization, and finally gas chromatographic and mass spe ctrometric comparison with authentic synthetic material, 75 constituen ts were identified in the preorbital secretion of the male oribi, Oure bia ourebi. The secretion contains compounds with long-chain, unbranch ed structures similar to those found in many other preorbital secretio ns but with a finite volatility range, in contrast to the seemingly en dlessly increasing chain lengths typical of other preorbital secretion s.