The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The relation between iodine-131 metabolism, tumor growth, and regression》. Authors are Scott, Kenneth G.; Daniels, Marie B..The article about the compound:5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloridecas:148-51-6,SMILESS:OC1=C(C)C(CO)=CN=C1C.[H]Cl).Application of 148-51-6. Through the article, more information about this compound (cas:148-51-6) is conveyed.
Ability of tumors to alter the normal metabolic pathway of I131 and compounds labeled with it (iodide-trapping syndrome) (I) is characterized by higher than normal retention of I131 by skin, muscle, gastrointestinal tract, and plasma, and a lower than normal thyroid uptake and urinary excretion of I131. I was elicited in rats by isografts and homografts of a transmissible fibrosarcoma, but not by homoiografts (which regressed after 5-7 days of growth). The data suggest that local and systemic I parallels progressive tumor growth and is absent in tumor implants destined to regress.
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Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia