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Certification of Analysis

Items of analysis	Specification	Results
Appearance	An orange yellow or yellow,crystalline powder.	Conforms
Solubility	Insoluble in water,very soluble in methanol,chloroform,freely soluble in anhydrous alcohol and ethyl acetate.	Conforms
E(1% 1cm)	458~486	465
Melting Range	52~55℃	54~55℃
Loss on drying	≤0.1%	0.04%
Residue on Ignition	≤0.1%	0.02%
Heavy metals	≤10ppm	Conforms
Impurities(HPLC)	≤0.8%	0.6%
Residue Solvents(GC)	Hexane≤0.029%	Conforms
	Methanol≤0.3%	Conforms
	Toluene≤0.089%	Conforms
Assay(HPLC)	≥98.5%,anhydrous substance	99.5%
Conclusion	Conform with specification
Remark	For Laboratory use only, not for drug, household or other use
Packaging and storage: Keep in a well-closed container,stored at the temperature not exceeding 20℃.

Analyst: David Zhang Check: Jason Jia Date: 2013-03-03