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Marrubiin analytical standard provided with w/w absolute assay, to be used for quantitative titration.
Purity (HPLC) ≥98% (This product is available with HPLC chromatogram)
Melting point : 153-160°C
[α]D : +(45 ± 5)° c=0.5 in acetone
EP / White horehound
Store in dry and dark place.