Gmp Standard Hormone powder Sildenafil/Viagra for male enhancer CAS 139755-83-2

Product parameters:

CAS: 139755-83-2

/ chemical name: sildenafil (sildenafil base)

Molecular formula/structured: C22H30N6O4S

Molecular weight: 474.58

Content (%) : 99.9

Product specifications: 1 * 25

Our advantages:

（1）We will ship the goods within 24 hours after get your payments.   

（2）We will ship the goods that you order from us by DHL, UPS, TNT and EUB.We will decided to choose which courier depend on different countries.To find the best way to delivery the goods for you.   

（3）As usual you can get the goods with in 4-7days.If the goods were lost or not received for other reasons, please contact us immediately.

（4）Fast and safe delivery:Sample Order : As usual you can get the goods within 4-7days. We can send it via HKems, HK Air Post, DHL or other methods.We have a professional and stable logistics, and we can deliver the package smoothly around 3 to 5 days.Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is 7-15days after payment.