can't read?
DL-Isocitric acid trisodium salt is the protonated form of isocitrate, a substrate in the citric acid cycle. It is useful as a marker for determining the composition of isocitrates in fruit products, including fruit juices.
I 1595 (OTTO) DL-Isocitric acid trisodium salt, 98% cas 1637-73-6 - used as a marker to detect the quality of citrus juices.