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Guaifenesin Usp 34(Glyceryl Guaiacolate)

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CAS No. 93-14-1
NDC No. 60203-1001
Chemical Name 3-(2-Methoxyphenoxy)-1,2-propanediol;
3-(o-Methoxyphenoxy)-1,2-propanediol
Synonyms Guaiphenesin; Guaiacol Glyceryl Ether, Fustosil
Molecular Formula C10H14O4
Molecular Weight 198.22
Description White to slightly gray, crystalline powder, having a bitter taste. It may have a slight characteristic odor.
Solubility Soluble in water, alcohol, chloroform, glycerin.
Melting range 78.0 ~ 82.0 ℃
Loss on Drying Not more than 0.5% of its weight.
Heavy metals The limit is 0.0025%.
Chromatographic purity
Guaifenesin -isomer
Not more than 1.5%
Guaiacol
Not more than 0.03%
Individual impurity
Not more than 0.5%
total impurities
Not more than 1.0%
Organic volatile impurities Meets the requirements
Assay 98.0~102.0%


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