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 59951 ICP Calibration Mix Price on request 96319 n-Hydrocarbon Standard Price on request 95830 Nitrophenols Mix Price on request