Shanazarov, K. S. published the artcileSynthesis of hydroxyalkyl esters of pelvirinic acid [3,5-diiodo-4-oxo-1(4H)-pyridineacetic acid], HPLC of Formula: 101-29-1, the publication is Khimiko-Farmatsevticheskii Zhurnal (1969), 3(4), 21-2, database is CAplus.
The title acid (I) was esterified with ethylene glycol and with 1,2-propylene glycol by a method to produce, resp., potential x-ray-contrasting substances β-hydroxyethyl 3,5-diiodo-4-pyridine-N-acetate (II) and β-hydroxypropyl 3,5-diiodo-4-pyridone-N-acetate (III) resp. Thus, a mixture of 30 g. I, 60 ml. ethylene glycol, 150 ml. C6H6, and 5 g. cationite KU-2 was boiled 2 hrs. with intense stirring until H2O ceased to collect in the H2O-separator. The mixture was cooled, 200 ml. Me2CO added and worked up to yield 84.8% II, m. 190.5-91°. Similarly prepared was 82.4% III m. 170-2° (EtOH).
Khimiko-Farmatsevticheskii Zhurnal published new progress about 101-29-1. 101-29-1 belongs to iodides-buliding-blocks, auxiliary class Pyridine,Iodide,Carboxylic acid,Ketone, name is 2-(3,5-Diiodo-4-oxopyridin-1(4H)-yl)acetic acid, and the molecular formula is C9H6FNO, HPLC of Formula: 101-29-1.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com