1,2,3,4-Butanetetrol,1,4-dimethanesulfonate, (2S,3S)- CAS NO.299-75-2

1 good quality, better price and bettter service；
2 Timely delivery；
3 100% refunded if parcel is t delivered or poor quality.
We will try to satisfy you upon receipt of your reply. I hope that we can become a long-term cooperative partner.