Phenobarbital impurity B 15 mg (x1) /
https://www.manchesterbeacon.org/shop/rw2-y0001351-phenobarbital-impurity-b-15-mg-x1-309214
https://www.manchesterbeacon.org/web/image/product.template/309214/image_1920?unique=4fc67c5
This Phenobarbital is guaranteed a impurity B with the use of 15 and directly supplied to your lab by Gentaur's warehouse.
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