> as lemmas
heteroˈxanthine
heteroˈxanthine n. 
/ˌhɛt(ə)rə(ʊ)ˈzanθʌɪn/, /ˌhɛdərəˈzænˌθin/, /ˌhɛdəroʊˈzænθən/, /ˌhɛdərəˈzænθən/ [ < German heteroxanthin (G. Salomen 1885, in Berichte der Deutsch. Chem. Ges. 18 3407)] Biochemistry 7-methylxanthine, C6H6O2N4, a purine sometimes found in human urine.
Brit. /ˌhɛt(ə)rə(ʊ)ˈzanθiːn/
, /ˌhɛt(ə)rə(ʊ)ˈzanθiːn//ˌhɛt(ə)rə(ʊ)ˈzanθʌɪn/U.S. /ˌhɛdəroʊˈzænˌθin/
, /ˌhɛdəroʊˈzænˌθin//ˌhɛdərəˈzænˌθin//ˌhɛdəroʊˈzænθən//ˌhɛdərəˈzænθən/ΘΚΠ
the world > matter > chemistry > organic chemistry > substances from animals or humans > [noun] > substances in urine > miscellaneous others
melanurin1844
kyestein1846
indican1859
heteroxanthine1886
homogentisic acid1891
urobilinogen1893
uroporphyrin1924
uroporphyrinogen1924
pyridoxic acid1944
1886 Jrnl. Chem. Soc. 50 266 These..researches have led to the isolation of another constituent of human urine, which it is proposed to call heteroxanthine.
1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 206/1 Heteroxanthine appears to be a product of the metabolism of theobromine and caffeine, for when these alkaloids are administered to rabbits, dogs or men, heteroxanthine appears in the urine.
<
as lemmas