229 



Table 5-1 Compounds previously reported in the literature as species which emanate 

 from human skin. Listed with the compounds are the corresponding molecular 

 formula and relative molecular mass (r^j). Explanation of remarks follows this table. 



Compound 



Acids/Carboxylic acids 



Formic acid 

 Acetic acid 

 Propenoic acid 

 Propanoic acid 

 Butanoic acid 

 Pentanoic acid 

 Hexenoic acid 

 Hexanoic acid 

 Heptenoic acid 

 Heptanoic acid 

 Octenoic acid 

 Octanoic acid 

 Nonenoic acid 

 Nonanoic acid 

 Decenoic acid 

 Decanoic acid 

 Undecenoic acid 

 Undecanoic acid 

 Dodecanoic acid 

 Hexadecanoic acid 

 Octadecanoic acid 

 Eicosanoic acid 

 Oxoacetic acid 

 Glycolic acid 

 Pyruvic acid 

 Lactic acid 

 Malic acid 

 Oxalic acid 

 Propanedioic acid 

 Butanedioic acid 

 Pentanedioic acid 

 Benzoic acid 

 Cinnamic acid 

 Isophthalic acid 



Formula 



Remarks 



Tm 



CH,0, 





46 



c^H.d, 





60 



CsH.O^ 





72 



CbH^O, 





74 



C4H8O, 





88 



C5H10O2 





102 



QH10O2 





114 



CftHi^O^ 





116 



c,u,,o. 





128 



QH,,o, 





130 



QH1402 





142 



QHi^Ot 





144 



C9H1602 





156 



CgHigOj 





158 



CioHigOj 





170 



^10^20^2 





172 



C11H20O2 



D 



184 



C11H22O2 





186 



C12H24O2 





200 



C16H32O2 



C 



256 



C18H34O2 



C 



284 



^20^3802 





312 



C2H2O3 





74 



C2H4O3 





76 



C3H4O3 





88 



C3H,03 





90 



C4H,03 





134 



C2H204 





90 



C3H40, 





104 



QH,04 





118 



C5H804 





132 



QH,02 





122 



C9H802 





148 



C«H,0, 





166 



