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Introduction
Tolyporphins are unusual tetrapyrrole macrocycles produced by a non‐axenic filamentous cyanobacterium (HT‐58‐2). Tolyporphins A–J, L, and M share a common dioxobacteriochlorin core, differ in peripheral substituents, and exhibit absorption spectra that overlap that of the dominant cyanobacterial pigment, chlorophyll a. Identification and accurate quantitation of the various tolyporphins...
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