Ursodeoxycholic Acid (IP/BP/EP/USP)

Specification:

S.N. Test Parameter Specification
01. Description A White or almost white Powder
02. Identification
A) By Infra-red spectrophotometer The Infra-red absorption spectrum of the sample should exhibit maxima only at the same wavelengths as that of a similar preparation of standard.
B) By TLC The principal spot in the chromatogram obtained with test solution (b) is similar in position, color and size to principal spot in chromatogram obtained with reference solution (a).
C) By Chemical The suspension obtained is greenish blue.
03. Melting Point Melts at about 202ºC
04. Solubility Practically insoluble in water, freely soluble in ethanol (96%), slightly soluble in acetone, practically insoluble in methylene chloride.
05. Specific Optical Rotation (On dried basis) Between +58.0º and +62.0º (On dried basis)
06. Impurity C by TLC Not more than 0.1%
07. Related substances by HPLC
1) Impurity A Not more than 1.0%
2) Unspecified single impurity Not more than 0.1%
3) Total impurity Not more than 1.5%
08. Heavy Metals Not more than 20 ppm
09. Sulphated Ash Not more than 0.1% w/w
10. Loss on Drying Not more than 1.0% w/w
11. Assay (By Titration) Between 99.0% and 101.0% w/w (On Dried basis)