hematoporphyrin hematoporphyrin hematoporphyrin (photodyn, sensibion) is a porphyrin prepared from hemin. it is a derivative of protoporphyrin ix, where the two vinyl groups have been hydrated (converted to alcohols). it is a deeply colored solid that is usually encountered as a solution. its chemical structure was determined in 1900. hematoporphyrinclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 7,12-bis(1-hydroxyethyl)-3,8,13,17-tetramethyl-21h,23h-porphine-2,18-dipropanoic acid cas number14459-29-1pubchem cid11103chemspider10632 yuniihbt6m5h379chemblchembl317840 yecha infocard100.034.939 chemical and physical dataformulac34h38n4o6molar mass598.700 g·mol−13d model (jsmol)interactive imagemelting point172.5 °c (342.5 °f) smiles cc1=c(c2=cc3=nc(=cc4=nc(=cc5=c(c(=c(n5)c=c1n2)c(c)o)c)c(=c4ccc(=o)o)c)c(=c3c)ccc(=o)o)c(c)o inchi inchi=1s/c34h38n4o6/c1-15-21(7-9-31(41)42)27-14-28-22(8-10-32(43)44)16(2)24(36-28)12-29-34(20(6)40)18(4)26(38-29)13-30-33(19(5)39)17(3)25(37-30)11-23(15)35-27/h11-14,19-20,37-40h,7-10h2,1-6h3,(h,41,42)(h,43,44)/b23-11-,24-12-,25-11-,26-13-,27-14-,28-14-,29-12-,30-13- ykey:kfkrxesvmdbtnq-ampavegjsa-n y (verify) it is used as a photosensitizer in photodynamic therapy. acetylation of hematoporphyrin followed by hydrolysis of the product of that reaction affords a mixture called hematoporphyrin derivative (hpd), which is also used in photodynamic therapy. hematoporphyrin has also been used as an antidepressant and antipsychotic since the 1920s.