生物活性
Tioxolone is a metalloenzyme carbonic anhydrase I inhibitor with a Ki of 91 nM. Tioxolone lacks sulfonamide, sulfamate, or hydroxamate functional groups that are typically found in therapeutic carbonic anhydrase (CA) inhibitors, such as acetazolamide. Tioxolone is proposed to be a prodrug inhibitor that is cleaved via a CA II zinc-hydroxide mechanism known to catalyze the hydrolysis of esters. When tioxolone binds in the active site of CA II, it is cleaved and forms 4-mercaptobenzene-1,3-diol via the intermediate S- (2,4-thiophenyl) hydrogen thiocarbonate. The esterase cleavage product binds to the zinc active site via the thiol group and is therefore the active CA inhibitor, while the intermediate is located at the rim of the active-site cavity.
化学数据
| 分子量 | 168.17 |
| 分子式 | C7H4O3S |
| CAS号 | 4991-65-5 |
| 纯度 | >98% |
| 溶解性（25°C） | DMSO 30 mg/mL |
| 储存和运输条件 | 固体粉末： -20°C 冷藏长期储存
常温运输及临时存放 |
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）
| 小鼠 | 大鼠 | 兔 | 豚鼠 | 仓鼠 | 狗 |
| 重量 (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| 体表面积 (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km系数 | 3 | 6 | 12 | 8 | 5 | 20 |
| 动物 A (mg/kg) = 动物 B (mg/kg) × | 动物 B的Km系数 |
| 动物 A的Km系数 |
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Km系数（3），再除以大鼠的Km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。
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|
| 1 mM | 5.9464 mL | 29.7318 mL | 59.4636 mL |
| 5 mM | 1.1893 mL | 5.9464 mL | 11.8927 mL |
| 10 mM | 0.5946 mL | 2.9732 mL | 5.9464 mL |
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