80nm Methylated (methoxy-PEG5000-SH) Gold NanoUrchins Methyl Gold nanoparticles 3E+13 (when dissolved to a

3E+13 (when dissolved to a final volume of 1ml)

70E+10 <10% 2

90nm NHS-Activated Gold NanoUrchins (lyophilized) - 1 vial

83E-11 * All concentrations as indicated at an optical density of 1 (OD=1

Core diameter: 50nm

80nm Methylated (methoxy-PEG5000-SH) Gold NanoUrchins Methyl Gold nanoparticles 3E+13 (when dissolved to aComposition: Methylated (methoxy PEG thiol, 5kDa) Gold NanoUrchins Core Size: 80nm Adsorption max: 620nm Optical Density (OD): 50 Particles per ml: 3. 91E+11 Formulation: Supplied in USP grade purified water Properties These non protein binding methylated gold nanourchins have a narrow size distribution (CV of less than 10%), prolonged shelf life and reduced aggregation propensity due to the protective PEG layer. Low batch to batch variability (+ 2nm)