Bulk drug
Iohexol
Molecular formula: C19H26I3N3O9
Structural formula:
Molecular Weight: 821.14
Packing: 25Kgs net weight in iron or paper drum
Quality standard: USP25
| Items | Standard |
| 1.Characteristics | Light white crystalline powder |
| 2.Specific rotation[a]D2o | -0.5 o- +0.5 o |
| 3.Los on drying % | ≤4.0 |
| 4.Heavy metals % | ≤0.002 |
| 5.Free aromatic aminc % | ≤0.05 |
| 6.Free iodide % | conforms |
| 7.Free iodide % | ≤0.002 |
| 8.Ionic compounds % | ≤0.05 |
| 9.Limit of methanol, isopropyl,alchol,and methoxyethanol % |
methanol ≤0.005 isopropyl aechot ≤0.01 methoxyethanol ≤0.01 |
| 10.Limit of 3-chloro-1,2-propanediol % | ≤0.01 |
| 11?Limit of o-alkylated compounds % | ≤0.6 |
| 12.Chromatographic purity(sum of impurities) % | ≤0.4 |
| 13.Assay % | 98.0-102.0 |