: Contains not less than 98.5% and not more than 101.0% of Menadione ( ), calculated on a dried basis. Melting Range : Between 105°C and 107°C .

: Because Vitamin K3 is highly sensitive to light, the monograph mandates that all solutions be protected from light throughout the entire assay process. Safety and Handling Requirements An Overview of USP Monographs

The USP defines Menadione as . It is a bright yellow crystalline powder with a faint, characteristic odor. The USP monograph ensures that any product labeled as Vitamin K3 USP meets strict specifications. Key USP Specifications (Menadione USP29-NF24) Empirical Formula: Molecular Weight: 172.18172.18 Assay Requirements: Contains not less than and not more than , calculated on the dried basis. Melting Range: 105∘C105 raised to the composed with power C 107∘C107 raised to the composed with power C Loss on Drying: Not more than of its weight when dried over silica gel for 4 hours. Residue on Ignition: Not more than Menadione Sodium Bisulfite: The Water-Soluble Standard

When discussing the **vitamin k3 us

: Ensures that solvents used in manufacturing do not exceed regulatory limits.

Method I: Not more than 20 µg/g.