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UT-B-IN-1 (UTBINH-14) is a reversible, competitive and selective urea transporter-B (UT-B) inhibitor with IC50 values of 10 and 25 nM for human and mouse UT-B, respectively. UT-B-IN-1 shows low toxicity and high selectivity for UT-B over UT-A isoforms. UT-B-IN-1 increases urine output and reduces urine osmolality of mice. UT-B-IN-1 can be used for diuretic mechanism research[1].

[1] Yao C, et al. Triazolothienopyrimidine inhibitors of urea transporter UT-B reduce urine concentration. J Am Soc Nephrol. 2012 Jul;23(7):1210-20. DOI:10.1681/ASN.2011070751