title: Letter: The heat stability of synthetic and natural pyridoxal.
mesh_terms: D004355:Drug Stability; D006358:Hot Temperature; D011730:Pyridoxal / Q000032:analysis / Q000097:blood / Q000138:chemical synthesis*; D011732:Pyridoxal Phosphate; D011736:Pyridoxine; D013997:Time Factors
chemical_list: D011730:Pyridoxal; D011732:Pyridoxal Phosphate; D011736:Pyridoxine