4-Amino-6-hydroxy-2-mercapto-5-nitrosopyrimidine

4-Amino-6-hydroxy-2-mercapto-5-nitrosopyrimidine

1,5-Diphenyltetrazole

1,5-Diphenyltetrazole

1-(2,4-Diamino-7-pteridinyl)-1-butanone

1-(2,4-Diamino-7-pteridinyl)-1-butanone

Diphenyl anilinophosphonate

Diphenyl anilinophosphonate

4-Amino-2,6-dihydroxy-5-nitropyrimidine

4-Amino-2,6-dihydroxy-5-nitropyrimidine

6-Amino-1-methyl-2-thio-uracil

6-Amino-1-methyl-2-thio-uracil

4-Amino-1,3-dimethyl-5-nitrosouracil

4-Amino-1,3-dimethyl-5-nitrosouracil

2-(Methylamino)-4,6-pyrimidinediol

2-(Methylamino)-4,6-pyrimidinediol

1-Methyl-6,7-diphenyllumazine

1-Methyl-6,7-diphenyllumazine