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molecular formula: C17H16N2O6S, molecular weigh: M=376.42, PH: 2.0-3.5, Specification: MNB96:menadione content≥43.7%,Niacinamide content ≥31.2% MNB50:menadione content≥22.8%,Niacinamide content ≥16.4%  

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