80nm Methylated (methoxy-PEG2000-SH) Gold NanoUrchins Size:0.5ML (M-1cm-1) Size Dispersity (+/-nm) Particle

(M-1cm-1) Size Dispersity (+/-nm) Particle Volume (nm3) Surface Area (nm2) Surface/Volume Ratio Particle Mass (g) Molar Mass (g/mol) Molar Concentration* 60 540 1

10E+07 <15% 6

2E+13 (when dissolved to a final volume of 1ml)

Store product away from direct sunlight at 4-25°C

80nm Methylated (methoxy-PEG2000-SH) Gold NanoUrchins Size:0.5ML (M-1cm-1) Size Dispersity (+/-nm) ParticleComposition: Methylated (methoxy PEG thiol, 2kDa) 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)