Fluorescent Brightener Agent OB-2 [4,4''-Bis(5-methyl-2-benzoxazolyl)stilbene], 97%, 5g Back Catalog number: Q147 Availability: In the manufacturer's stock Price on request - + Recommended 90586 Wisconsin DNR PVOC Standard Price on request XA14470000AL Isoproturon, 100µg/ml n Acetonitrile, 1ml Price on request 98597 Methanol Price on request