HIGHLY recommend Comprartapentadol!! I have been doing business with them for a couple of years now, and the quality of the research chemicals is Top Notch! They are genuine and potent. The customer service is amazing -- even a dumb question I had -- they replied to me the same day. I have never had a problem with anything. I actually received my last order in one week (which is not the norm) but I know they are filling and shipping orders super fast. And that tells me they care about their customers. If you are thinking about placing an order, you can TRUST these guys-100% legit!