LIPIDES (fats and RELATED SUBSTANCES) 



83 



o 



II 



H,COC(CH,)uCH, 

 O 



ii 



HCOC(CHj)uCH, 







II 

 H2COC(CH5)uCH, 



Tripalmitin 



O 



II 

 HsC0C(CHj).6CH, 







II 

 HCOC(CH2),6CH, 



O 



II 

 H2COC(CH3)i6CH, 



Tristearin 



O 



II 

 HjCOC(CH2)7CH=CH(CKj)7CH, 



O 

 II 

 HC0C(CH,),CH=CH(CH2),CH, 



O 

 II 

 H2COC(CH5),CH=CH(CH2)7CH, 



Triolein 



O 



II 



H2COC(CIl2)2CH3 



O 



II 

 HCOC(CH,)2CH3 



O 



II 

 H2COC(CH2)2CH3 



Tributyrin 



The ester formed from glycerol combined with two molecules of stearic 

 acid and one of palmitic acid is called distearo-palmitin. This is a typical 

 mixed glyceride. Another is oleo-stearo-palmitin: 



O 



II 

 HjCOC(CH2)i6CH3 



O 

 II 

 HCOC(CH2),6CH, 



O 



II 

 HjCOCCCHOmCH, 



Distearo-palmitin 



O 



II 

 H2COC(CH2)vCH=CH(CH2)7CH, 





 II 

 HCOC(CH2),6CH3 







II 

 HaCOCCCHOuCH, 



Oleo-stearo-palmitin 



IVIore condensed formulas are also frequently written. Thus, for example, 

 the oleic acid radical (oleyl radical) may be abbreviated from 



O 



II 



o 



— C(CH2)7CH=CH(CH2)7CIl3 to — CCuHj, 



and triolein may be written 







II 



C3H5(OCCi7H33)j 



