ISO 18857-2 4-n-Nonylphenol (ring13C6), Internal standard 1 µg/mL, in acetone, 10mL 8625.15 4-n-Nonylphenol (ring 13C6) 8626.17 4-n-Nonylphenol monoethoxylate (ring 13C6) 8627.19 4-n-Nonylphenol diethoxylate (ring 13C6) 2419.15 Bisphenol A (d16)