uro·​por·​phy·​rin ˌyu̇r-ō-ˈpȯr-fə-rən How to pronounce uroporphyrin (audio)
: any of four isomeric porphyrins C40H38N4O16 which contain acetic acid and propionic acid groups on the porphin nucleus and are closely related to the coproporphyrins

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“Uroporphyrin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/uroporphyrin. Accessed 21 Apr. 2024.

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