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 73763 Didodecyl phthalate Price on request EDF-6999-10X Method 1613 Clean-up Standard, 8ng/ml in Nonane, 20ml Price on request 676975 D4-Ethylparaben, 100 µg/ml, Acetonitrile, 1ml Price on request