钠 、
泛影酸 、
3-氯-1,2-丙二醇 以20 g (29 mmol) 3,5-diacetylamino-2,4,6-triiodobenzoic acid-2,3-dihydroxypropyl ester, which can be obtained from the sodium salt of 3,5-diacetylamino-2,4,6-triiodobenzoic acid by reaction with 3-chloropropane-1,2-diol at 105° C. (analogous to Organikum, 12th Edition, Deutscher Verlag der Wissenschaften, Berlin 1973, p.227 et seq.)的产率得到3,5-diacetylamino-2,4,6-triiodobenzoic acid-2,3-dihydroxypropyl ester