974 



SUBJECT INDEX 



Tetramethylhj'droquiuone mono-n-heptyl 

 ether, vitamin E biopotency, 827 



Tetramethylhydroquinoue mono-/i-hexyl 

 ether, vitamin E biopotency, 827 



Tetramcthylhydroquinone nu)no-2-meth- 

 yloctadecyl ether, vitamin E biopo- 

 tency, 827 



'relramethylhydroquinoue mono-3- 

 inethyl-5-(r,r,3'-trimethyl-2'-c5'clo- 

 hexyl) pentyl-1 ether, vitamin E bio- 

 potency, 827 



Tetramethylhydroquinone mono-ri- 

 nonadecyl ether, vitamin E bin- 

 potency, 827 



Tetramethylhydrociuinone mono-?;- 

 nonadecyl-2-ether, vitamin E bio- 

 potency, 827 



Tetramethylhydroquinone mono-?i-octa- 

 decyl ether, vitamin E biopotency, 

 827 



Tetramethylhydroquinone mono-ji-octyl 

 ether, vitamin E biopotency, 827 



H-Tetratetracontanol (see Takakibyl 

 alcohol) 



Tetratriacontane, in tree bark waxes, 379 



Tetratriacontanoic acid, long spacings, 97 

 melting point, 50 



n-TetratriacontanoI (see Tetratriacontyl 

 alcohol) 



Tetratriacontyl alcohol, freezing point, 

 307 

 long spacings, 317 



Tetronerythrin. 512 



Thannhauser methods for sphingomyelin 

 preparation, 457, 458 



Thapsic acid, discovery, 42 

 occurrence, 44 

 physical constants, 49 



Thayer unit for vitamin K, 843 



Thayer-Doisy unit for vitamin K, 843 



Thierfelder method for phrenosine, 477. 

 478 



Thierfelder-Schulze method for colamine, 

 447 



Thiocyanogen number, 244, 245 



Thistle, leaves, carotenes from, 518 



Three-leaf soapberry fat, composition, 

 208 



Thujorhodin (see Rhodoxanthin) 



Thymoquinone. vitamin E biopotency. 

 826 



Thymus, j3-carotene in, 525 

 cerebrosides in, 474 



Thymus {continued) : 



tocopherols in, 799, 800 

 Tiiynnic acid, discovery, 19 

 Tliyroid, glyceroi)liosphates in, 436 

 Tiger lily, anthcraxanthin in, 576 



cai)santhin in, 576 



\itamin A in, 677 

 Timnodonic acid, discovery, 19 



pln-sical constants, 47 

 Timothy bacillus, a-carotene in, 541 



cryptoxanthin in, 550 



lutein in, 559 

 Toad venom, ergosterol in, 356 

 Tobacco seed oil, composition, 200 

 Tocol, biopotency, 821 



structure, 805 

 Tocopherols, 793-827 



absorption mechanism, 803 



antioxidant activity, 295, 296 



as inhibitols, 289-291 



a,a'-dipyridyl method for, 819 



gold chloride method for, 818 



nitric acid method for, 818, 819 

 a-Tocopherol, absorption maxima, 813, 

 816 



biopotency, 820 



comparative antioxidant action, 290. 

 291, 816-818, 823 



content in fats, 798 



crystals, photomicrographs of, 812 



decomposition, 806 



discovery, 795 



extinction coefficient, 813 



infrared spectrum, 815 



molecular extinction curve, 814 



preferential storage, 801 



specific rotation, 816 



structure, 290, 796, 804-807 



synthesis, 796, 809, 810 

 a-Tocopherol acetate, 816 



biopotency, 821 

 a-Tocopherol-7i-butyrate, biopotency, 821 

 a-Tocopherol propionate, biopotency, 821 

 a-Tocopherolhydroquinone triacetate, 816 

 a-Tocopherol palmitate, 816 

 a-Tocopherylquinone, 816 

 a-Tocopherol succinate, 816 

 /3-Tocopherol, absorption maxima, 813 



biopotency, 821 



comparative antioxidant action, 290, 

 291, 816-818, 823 



content in fats, 798 



discovery, 795 



