2,3,7,8,12,13,17,18-Octaethyl-21h,23h-porphine
https://www.polycil.co.uk/shop/fm-in-da003ffw-237812131718-octaethyl-21h-23h-porphine-41281
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2,3,7,8,12,13,17,18-Octaethyl-21h,23h-porphine 1g : Porphyrin derivative for photochemistry, catalysis, and biomimetic research applications.
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