Tamsulosin (rINN) (trade name Flomax) is an α1a adrenergic receptor antagonist used in the symptomatic treatment of benign prostatic hyperplasia (BPH). Tamsulosin was developed by Yamanouchi Pharmaceuticals (now part of Astellas Pharma) and was first marketed in 1996 as Flomax, and also under the name Omnic.

CAS：106133-20-4
中文别名：(R)-5[2-[2-(2-乙氧基苯氧基)]乙胺基]丙基]-2-甲氧基-苯磺酰胺;坦索罗辛2-羟基苯丙酮;坦索罗辛;盐酸坦索罗辛(盐酸坦洛辛);
英文别名：Tamsulosinum;[14C]-Tamsulosin;Tamsulosina [INN-Spanish];Tamsulosina;Tamsulosine;Tamsulosinum [INN-Latin];Tamsulosine [INN-French];Tamsolusin;5-[(2R)-2-[2-(2-ethoxyphenoxy)ethylamino]propyl]-2-methoxybenzenesulfonamide;(R)-(-)-5-[2-(2-(2-ethoxyphenoxy)ethylamino)propyl]-2-methoxybenzenesulfonamide;TAMSULOSIN;Flomax;Tamsulosin;
分子式：C20H28N2O5S
分子量：408.512
精确质量：408.172
Psa：108.26
Logp：4.5129

MDL号：MFCD00871531

外观与性状：白色晶体
密度：1.191 g/cm3
沸点：595.5ºC at 760 mmHg
熔点：226-228ºC
闪点：313.9ºC
折射率：1.553
蒸汽压：3.79E-14mmHg at 25°C

海关编码：2935009090