SUBJECT INDEX 



640 



Derm;i(omyosi(is, tocophprol tnu\, 559- 



560 

 Desoxyin ridoxine, 265, 270, 275, 284-285 

 as antagonist, 242, 2S2 

 toxicity of, 291 

 Desoxj-ribosides, 130 



requirement for, 131-132 

 Deuteroflavin, 310 

 Diabetes, tocopherol and, 569 

 Diacetone riboflavin, in growth stimula- 

 tion, 325 

 Diacetyl mutase, 442 

 inhibitors of, 436 

 specificity of, 444 

 Dialuric acid, tocopherol and, 537, 546 

 Diamine oxidase, 356 

 2,4-Diamino-5-p-chlorophenoxy])\rimi- 



dine, as inhibitor, 150-151 

 2,4-Diamino-6-hj'droxy-5-formamido- 



pyrimidine, resemblance to leuco- 



vorin, 115 

 2,6-Diamino-7-methylpurine, 152 

 2,4-Diaminopteridine, as inhibitor, 152- 



153 

 2,6-Diaminopurine, as inhibitor, 151-152, 



160, 161 

 2,4-Diaminopjrimidines, as inhibitors, 



150-151 

 o-Dianisidine, in tocopherol assaj', 508 

 Diaphorase, coenzyme of, 343-344 

 Diarrhea, tocopherol and, 553, 554 

 Diazotized p-aminoacetophenone, in 



pyridoxine estimation, 246-247 

 Diazotized, p-nitroaniline, in pyridoxine 



estimation, 247 

 Diazotized sulfanilic acid, in pyridoxine 



estimation, 246 

 Dibenamine, 466 

 a,/3-Dibromobutyraldehyde, 155 

 2,3-Dibromopropionaldehyde, in folic 



acid synthesis, 104, 106, 122 

 Dichloroflavin, 

 effects on growth, 328-329 

 phosphorylation of, 331 

 2,6-Dichloroindophenol, in tocopherol 



assay, 506 

 2,6-Dichloro([uinonechlorimide, 

 in pyritloxine estimation, 247-249 

 reaction with pyridoxine, 224, 227 

 Dichloro-D-sorboflavin, 330 



6,7-Diethyl-9-(iJ r-ribityl)isoalloxazine, 

 330 

 effects on growth, 325-326 



Dihydropteroylglutamic acid, reduction 

 potential of. 111 



Dihydroriboflavin, 312 



5,10-Diformyl-5,6,7,8-tetrahydropter- 



oylglutamic acid, formation of, 120 



Dihydrouracil, 114 



2,3-Dihydroxyacrylaldehyde, see Re- 

 ductone 



3,5-Diiodo p-aminobenzoic acid, in thy- 

 rotoxicosis, 84 



Diiodotyrosine, 41, 57 



2,3-Dimercaptopropanol, 582 



p-Dimethylaminoazobenzene, riljoflavin 

 and, 394 



p-Dimethylaminobenzaldehyde, reaction 

 with p-aminobenzoic acid, 11, 21 



X, N-Dimethylaminobenzene, carboxyl- 

 ase and, 437 



p-Dimethylaminobenzoic acid, ultra- 

 violet absorption of, 5 



l,2-Dimethyl-4,5-diaminobenzene, in 

 riboflavin biosynthesis, 322 



Dimethylhydroquinones, in tocopherol 

 sj^nthesis, 488-489, 496 



N , N-Dimethyl-1-naphthylamine, as 



coupling agent, 20 



9,10-Dimethylpteroylglutamic acid, as 

 inhibitior, 156-157 



o-Dinitrobenzene, in riboflavin syn- 

 thesis, 316 



Diphosphopyridine nucleotide, 342, 442, 

 583 

 in p-aminohippuric acid sjnthesis, 14 

 in pyruvate oxidation, 579-580 

 oxidation of, 344 

 regeneration of o-Vidized form, 580-581 



Diphosphothiamine, see Tliiamine pyro- 

 phosphate 



Dipropionyl, 444 



a,a-Dipyridyl, in tocopherol assay, 506, 

 508 



Disease, 



/>-aminoi)onzoic aciil and, 85 

 treatment with vitamin Br, , 282-290 



Dithiocarbaminate, in lliiaminc syn- 

 thesis, 421 



Dithioformic acid, in thiamine sj'nthesis, 

 420-421 



