Fialkov, Ya. A. published the artcileComplex formation by trihydroxyglutaric acid with some metals. I. Complex formation of trihydroxyglutaric acid with trivalent iron, SDS of cas: 6443-90-9, the publication is Zhurnal Neorganicheskoi Khimii (1956), 2504-16, database is CAplus.
Optically inactive trihydroxyglutaric acid (I) reacts with aqueous Fe(NO3)3 to form a Fe-bearing anion. From experiments carried out at low pH values (<2) and from equilibrium studies of Fe sal+ (where sal is the bivalent salicylate radical) with I at pH = 3, and of Fe sal2– with the disodium salt of I (at pH = 6), optical d. and elec.-cond data were obtained which supported the hypothesis of a complex in which the Fe:I ratio was 1:1. At low pH values the principal species is H[FeC5H4O7]. At pH = 6, the anion [FeC5H4O7]– is characteristic, whereas at pH = 10, the anion becomes [FeC5H3O7]—. The equilibrium constant for the reaction [FeC5H4O7]– + 2H+ â?C5H6O7— + Fe+++ is 0.12. At about pH = 6, the trihydroxyglutarate complex of Fe+++ is probably more stable than is the corresponding tartrate complex.
Zhurnal Neorganicheskoi Khimii published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, SDS of cas: 6443-90-9.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com