Pheophorbide a

Pheophorbide a is a product of chlorophyll breakdown that has been used as a photosensitizer in photodynamic therapy for the treatment of cancer. It has been reported to inhibit U87MG cells with an IC50 value of 2.8 µg/ml and demonstrates cytostatic activity specifically against glioblastoma cells without affecting normal cells. It also displays antiproliferative activity against melanoma, breast, and lung cancer cells in vitro at 100 µg/ml.Formal Name: 9-ethenyl-14-ethyl-21R-(methoxycarbonyl)-4S,8,13,18-tetramethyl-20-oxo-3S-phorbinepropanoic acid. CAS Number: 15664-29-6. Synonyms: 2-Deacetyl-2-vinylbacteriopheophorbide. Molecular Formula: C35H36N4O5. Formula Weight: 592.7. Purity: >90% (mixture of diastereomers). Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 1 mg/ml, DMSO: 1 mg/ml, DMSO:PBS(pH 7.2) (1:3): 0.25 mg/ml. lambdamax: 225, 275, 331, 409, 537, 609, 666 nm. SMILES: O=C1[C@H](C(OC)=O)C2=C3N/C(C(C)=C31)=C\C(C(CC)=C/4C)=NC4=C/C5=C(C=C)C(C)=C(/C=C6[C@@H](C)[C@H](CCC(O)=O)C2=N/6)N5. InChi Code: InChI=1S/C35H36N4O5/c1-8-19-15(3)22-12-24-17(5)21(10-11-28(40)41)32(38-24)30-31(35(43)44-7)34(42)29-18(6)25(39-33(29)30)14-27-20(9-2)16(4)23(37-27)13-26(19)36-22/h8,12-14,17,21,31,36,39H,1,9-11H2,2-7H3,(H,40,41)/b22-12-,23-13-,24-12-,25-14-,26-13-,27. InChi Key: NSFSLUUZQIAOOX-QEWKCGBTSA-N.