CAS 917-23-7 appears in our catalog under these names: meso-Tetraphenylporphinemeso-Tetraphenylporphine, >98% (HPLC), meso-Tetraphenylporphine, Tetraphenylporphyrin, meso-Tetraphenylporphine, low chlorine , meso-Tetraphenylporphyrin. Offered by: Lumtec, TRC, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth. Available pack sizes: On request, 500mg, 2,5g, 25g, 5g, 1g, 250mg, 0,025kg.