Beta Nitropropionic acid

beta-Nitropropionic acid (3-nitropropanoic acid, BPA, 3-NPA, C₃H₅NO₄) is a mycotoxin, a potent mitochondrial inhibitor, toxic to humans. It is produced by a number of fungi, and found widely in food, in sugar cane, as well as Japanese fungally fermented staples miso, soy sauce, katsuobushi, and some traditional Chinese medicines.