930 



SUBJECT INDEX 



Q-Decenoic acid (see Caproleic acid) 

 Decenyl alcohol in wool fat, 370 

 7-Dehydrocampesterol as provitamin D, 



743 

 7-Dehydrocholesterol, absorption maxi- 

 ma, 748 



as provitamin D, 742, 743 



melting point, 749 



molecular extinction curve, 750 



occurrence, 746-748 

 in skin, 326 

 in spinal cord, 326 



properties, 342 



specific rotation, 749 



structure, 342, 754, 755 



synthesis, 333, 334, 756, 757 

 Dehydrolycopene, 546 

 Dehydrooleanolic acid, interconversions, 

 388, 389 



structure, 388 

 7-Dehydrositosterol, absorption maxima. 

 748 



as provitamin D, 743 



melting point, 749 



specific rotation, 749 



structure, 755 



synthesis, 757 

 7-Dehydrostigmaslerol, absorption maxi- 

 mum, 748 



activated, biopotencj', 781 



melting point, 749 



provitamin D activity, 744 



specific rotation, 749 



synthesis, 758 

 rf;-3,4-Dehydro-a-toeopheroK biopotency, 



822 

 5-Dehydrovitamin A ethers, Milas syn- 

 theses of. 723, 725 

 5-Dehydrovitamin A ethyl ethers, 708. 

 709 



absorption maximum, 706 



biological activity, 706, 708 



extinction, 706 



molecular extinction curve, 709 



SbCla reaction, 708 



structure, 708 

 Density, of fatty acids, 99-103 



of hydroxy acids, 45 



of monoethenoid acids, 46 



of polyethenoid acids, 47 



polymorphic form and, 251 



of saturated fatty acids, 45 



Density (continued) : 



of saturated monatomic alcohols, 307 

 of unsaturated monatomic alcohols, 



310 

 temperature and, 101 

 Deoxoglycyrrhetic acid, interconversions. 

 388, 389 

 structure, 388 

 Depot fat, vitamin A in, 685 

 Derived lipids, 5 



6-Desoxy-o-tocopherol, biopotency, 821 

 Dhupa tallow, composition, 206 

 1,4 - Diacetoxy-2-methylnaphthalene-3 - 

 acetaldehyde, from vitamin K2, 837 

 Diacetyl, from a-tocopherol, 805, 807 

 0-Diacetyllignocerylsphingosine, 465 

 2,3-DiaIlyl-l,4-naphthoquinone, vitamin 



K biopotency, 849 

 Diaphragm, tocopherols in, 800 

 1,3-Diarachidin, melting point, 264 



refractive index, 264 

 Diatom, cryptoxanthin in, 550 

 0-Dibenzoyllignocerylsphingosine, 465 

 1,3-Dibrassidin, long spacings, 264 

 molting points, 264 

 polymorphism, 264 

 2,2-Di-?i-butylchroman, vitamin E bio- 

 potency, 823 

 2,2-Di-n-butylchromene, vitamin E bio- 

 potency, 823 

 1,3-Dicaprin, melting points, 264 

 Dicarboxylic acids, 43 

 Dicerebroside, 504, 505 

 Dichloesteryl ether, 333 

 Di-H-dodecyl ether, vitamin E biopo- 

 tency, 827 

 1,3-Dielaidin, constants for, 264 

 Dielectric constants, polymorphic form 



and, 251 

 2,2-Diethylchroman, vitamin E biopo- 

 tency, 823 

 2,2-Diethylchromene, vitamin E bio- 

 potency, 823 

 Diel's hydrocarbon, 323, 324 



from cholesterol, 336 

 1,3-Dierucin, constants for, 264 

 5,7-Diethyl-8-methyltocol, biopotency, 



821 

 5,7-Diethyltocol, biopotency, 821 

 Digger pine seed oil, composition, 197 

 Digitonin, as steroid precipitant, 751 

 as sterol precipitant, 325 



