上游原料
1-chloro-3-methoxy-2-propanol5-(acetylamino)-N~1~,N~3~-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide5-amino-N~1~,N~3~-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide3-Amino-1,2-propanediol；3-aminopropane-1,2-diol1-chloro-3-methoxy-2-propanol5-(acetylamino)-2,4,6-triiodoisophthalic acid5-[acetyl(2-hydroxy-3-methoxypropyl)amino]-2,4,6-triiodoisophthalic acid5-{acetyl[2-(acetyloxy)-3-methoxypropyl]amino}-2,4,6-triiodoisophthalic acid2-[acetyl-3,5-bis(chlorocarbonyl)-2,4,6-triiodoanilino]-1-(methoxymethyl)ethyl acetate1-chloro-3-methoxy-2-propanol5-(acetylamino)-N~1~,N~3~-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide
