(r)-3-amino-2-methylpropanoate
(s)-dihydroorotate
(s)-lactate
(s)-malate
1,7-dimethylxanthine
2-methyl-3-oxopropanoate
2-oxoadipate
3-(4-hydroxyphenyl)pyruvate
3-methyl-2-oxobutanoic acid
3-ureidopropionate
4-methyl-2-oxopentanoate
5,6-dihydrothymine
5,6-dihydrouracil
Amp
Atp
Beta-alanine
Bilirubin
Biliverdin
Caffeine
Cholesterol
Citrate
Cmp
Creatine
Creatinine
Cytosine
D-fructose 6-phosphate
D-ribose 5-phosphate
Dump
Fumarate
Gdp
Glycine
Glycochenodeoxycholate
Glycocholate
Guanidinoacetate
Hippurate
Homogentisate
Hypoxanthine
L-2-aminoadipate
L-alanine
L-arginine
L-asparagine
L-aspartate
L-citrulline
L-glutamate
L-glutamine
L-histidine
L-isoleucine
L-kynurenine
L-leucine
L-lysine
L-ornithine
L-phenylalanine
L-proline
L-tyrosine
Leukotriene b4
Myo-inositol
N-(l-arginino)succinate
N-acylsphingosine
N-methylhistamine
Nad+
Orotate
Orotidine 5-phosphate
Phosphatidylcholine
Pyruvate
Quinolinate
S-adenosyl-l-homocysteine
S-adenosyl-l-methionine
Serotonin
Sn-glycerol 3-phosphate
Spermidine
Succinate
Taurine
Taurocholate
Thyroxine
Udp
Udp-glucose
Udp-glucuronate
Uracil
Urate
Urea
Xanthosine 5-phosphate