pheophorbide a + H2O <=> C-13(2)-carboxypyropheophorbide a + methanol
pheophorbide a + h2o <=> c-13(2)-carboxypyropheophorbide a + methanol
pheophorbide a + H2O <=> C-13(2)-carboxypyropheophorbide a + methanol
pheophorbide a + h2o <=> c-13(2)-carboxypyropheophorbide a + methanol