chemical name:Ursodeoxycholic acid
appearance:white needle crystallinepowder
cas no.:128-13-2
M.W.:391.5646
M.F.:C24H39O4
assay:99%min
melting point:203-206°C
boiling point:547.148°C at 760 mmHg
package:as customers'The detailed specifications are as below:
| Itemoftesting | InspectionStandard |
| Appearance | Whiteoralmostwhitepowder,tastebitter,withoutstink. |
| Solubility | Almostinsolubleinwater;solubleinmethanolandinglacialaceticacid;slightlysolubleinchloroform. |
| Identification | IRspectrum:identicalwithreferencespectrum. |
| SpecificOpticalRotation | +58°~+62° |
| Chloride | 0.02%Max |
| Sulfate | 0.05%Max |
| ArsenicSalt | 2ppmMax |
| BariumSalt | None |
| MeltingPoint | 200℃-204℃ |
| LossonDrying | 1.0%Max |
| IgnitionResidue | 0.1%Max |
| HeavyMental | 10ppmMax |
| Assay(Titration) | 99％~101％ |
| Particlesize | 95%below30цm |
| RelatedSubstance(TLC) ChenodeoxycholicAcid LithocholicAcid CholicAcid Unidentified TotalImpurity | Notmorethan1.0％ Notmorethan0.1％ Notmorethan0.5% Notmorethan0.25% Notmorethan2.0% |