生物活性

Hexestrol (Bibenzyl) is a novel type of 17β-hydroxysteroid dehydrogenase, AKR1C1and AKR1C2 potent inhibitor with IC50 of 0.8, 9.5, 2.8 μM, respectively and exhibits strong affinity for estrogen receptors. It is a synthetic estrogen that has been used as a hormonal antineoplastic agent. Rat liver contains two cytosolic enzymes (TBER1 and TBER2). TBER1 represents a novel type of 17β-hydroxysteroid dehydrogenase with unique catalytic properties and tissue distribution.. The recombinant TBER1 efficiently oxidized 17β-hydroxysteroids and xenobiotic alicyclic alcohols using NAD+ as the preferred coenzyme at pH 7.4, and showed low activity towards 20α- and 3α-hydroxysteroids, and 9-hydroxyprostaglandins. The enzyme was potently inhibited by diethylstilbestrol, hexestrol and zearalenone. Rat 17HSD5 differed from TBER1 in inhibitor sensitivity. The inhibitory potencies of diethylstilbestrol (IC50 = 7.5 μM), hexestrol (IC50 = 30 μM), and zearalenone (IC50 = 36 μM) for 17HSD5 were lower than those for TBER1 (the respective IC50 values were 1.7, 0.8 and 7.5 μM).

化学数据

实验操作 来自于公开的文献，仅供相同实验参考（如实验材料、目的不同，请参考其他文献）

不同实验动物依据体表面积的等效剂量转换表（数据来源于FDA指南）

例如，依据体表面积折算法，将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量，需要将20 mg/kg 乘以小鼠的K_m系数（3），再除以大鼠的K_m系数（6），得到化合物用于大鼠的等效剂量为10 mg/kg。

储备液配制

以下数据基于产品分子量，对于特殊产品，请参照COA中的储备液配制条件和说明进行操作。