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paraxanthine
paraxanthine n. 
/ˌparəˈzanθʌɪn/, /ˌpɛrəˈzænθən/ (also paraxanthin) [ < para- prefix1 + xanthine n., after German Paraxanthin (G. Salomon 1882, in Arch. f. Anat. u. Physiol. 426)] dimethylxanthine, C7H8N4O2, which is a product of the metabolism of xanthines.
Brit. /ˌparəˈzanθiːn/
, /ˌparəˈzanθiːn//ˌparəˈzanθʌɪn/U.S. /ˌpɛrəˈzænˌθin/
, /ˌpɛrəˈzænˌθin//ˌpɛrəˈzænθən/ΚΠ
1885 W. Stirling tr. L. Landois Text-bk. Human Physiol. II. 539 The crystalline body paraxanthin occurs in traces in the urine.
1897 Jrnl. Amer. Chem. Soc. 19 384 (table) Paraxanthine.
1912 W. Tibbles Foods ii. 33 Heteroxanthin.., monomethyl-xanthin.., and dimethyl-xanthin, or paraxanthin.., are derived from the theobromin, caffein, and theophyllin, which occur in various foods.
2000 New Scientist 29 Jan. 31/3 The study found an increased risk of miscarriage only in women with the very highest levels of paraxanthine.
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