cas 139755-83-2

【Payment Terms】Bitcoin, USDT, Monero, Wechat pay, Alipay, Bank transfer and Western Union etc. 【Price】$75/25kg（for reference only） Product Name: Sildenafil Synonyms: 1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methyl...