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Guaifenesin
C10H14O4 198.22
 1,2-Propanediol, 3-(2-methoxyphenoxy)-(±)-;
 (±)-3-(o-Methoxyphenoxy)-1,2-propanediol [93-14-1]

DEFINITION

Guaifenesin contains NLT 98.0% and NMT 102.0% of guaifenesin (C10H14O4), calculated on the dried basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Guaiacol RS
USP Guaifenesin RS
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