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 50297 0.020 N Sodium Hydroxide Price on request 70080 Chloromethyl methyl ether Price on request 71935 3-Methylcyclohexanone Price on request