658 



INDEX 



cysteine-sulfuric acid reaction and, 

 295-296 



;3-Amino acids, formation from pyrimi- 

 dines, 619 



o-Aminobenzaldehyde, thymine estima- 

 tion and, 121 



p-Aminobenzoic acid, amicetin and, 135 



2 - Amino -4 - chloro - 6 - methylpyrimidine, 

 dichroism of, 538 



D-3-Amino-3-deoxyribose, occurrence, 160 



2-Amino-4,6-dichloropyrimidine, x-ray 

 diffraction and, 448-449 



4-Amino-2,6-dichloropyrimidine, x-ray 

 diffraction and, 448-449 



4-Amino-6-glycosylaminopyrimidine, pu- 

 rine glycoside synthesis and, 152 



2-Amino - 4 - hydroxy - 6 - carboxypterin, 

 xanthine oxidase and, 613 



2-Amino-4-hydroxy-6-formylpterin, xan- 

 thine oxidase and, 613 



2-Amino -4 - hydroxy - 6 - hydroxymethyl- 

 pterin, xanthine oxidase and, 613 



6-Amino-4-hydroxy-2-methylthiopyrimi- 

 dine, conversion to chloro derivative, 

 127 



2-Amino-6-hydroxypurine, see Guanine 



6-Amino-2-hydroxypurine, xanthine oxi- 

 dase and, 612 



6-Amino-8-hydroxypurine, xanthine oxi- 

 dase and, 612 



4-Amino-6-hydroxy pyrimidine, 2-substi- 

 tuted, purine synthesis and, 131 



4-Amino-5-imidazolecarboxamide 

 phosphorylation of, 595 

 purine formation and, 134-135, 614 



4-Amino-5-imidazolecarboxamide ribo- 

 side, 36-37 



4-Amino-5-imidazolecarboxamide ri bo- 

 tide, formation of, 614 



4-Amino-5-imidazolecarboxamidine, 107, 

 118 

 purines and, 135 



/3-Aminoisobutyric acid, dihydrothymine 

 and, 621-622 



2-Amino-4-methyl-6-chloropyrimidine, x- 

 ray diffraction and, 448-449 



5-Aminomethyluracil, preparation of, 92 



2-Amino-5-nitropyrimidine, hydrolysis 

 of, 125 



p-Aminophenol, xanthine oxidase and, 

 612-613 



Aminopterin, deoxyribonuclease and, 582 

 6-Aminopurine, see Adenine 

 8-Aminopurines, synthesis of, 131 

 Aminopyridines, 118 

 2-Aminopyrimidine, 

 formation of, 125 

 reduction of, 120 

 4-Aminopyrimidine, synthesis of, 128 

 5-Aminopyrimidine, purine synthesis 



and, 131 

 6-Aminopyrimidine, 

 reduction of, 120 

 tautomerism of, 448 

 6-Amino-2-pyrimidinethiols, synthesis 



of, 127 

 3-Amino-D-ribose, 188 

 occurrence of, 15, 95 

 Aminosugars, nucleotide derivatives 



and, 99 

 4-Aminothymine, 126 

 4-Amino-2,5,6-trihydroxypyrimidine, oc- 

 currence of, 100 

 4-Aminouracil, reduction of, 126 

 5-Aminouracil, 104 

 oxidation of, 622 



thymidine phosphorylase and, 605 

 Ammonia, paper chromatography and, 



249, 251, 253, 254, 257, 264-265 

 Ammonium sulfate, paper chromatogra- 

 phy and, 250, 257 

 Amyl alcohol, paper chromatography 



and, 253 

 Amylase, 562 



1,5-Anhydro-D-arabitol, 45 

 2,5-Anhydromannose, indole-hydrochlo- 



ric acid reaction and, 297 

 Anhydroribitol, 45, 47 

 1,5-Anhydro-D-xylitol, 45 

 Animal tissue, 

 nucleoprotein isolation from, 375-376 

 pentose nucleic acid, 

 isolation, 387-389 

 nucleotides, 396-402 

 Anisotropy, 533 

 form, 534-535 

 Antabuse, see Tetraethylthiuram di- 

 sulfide 

 Anthrone reaction, 



deoxyribose and, 54 

 Antimetabolites, incorporation of, 557 



