Folic acidProduct SpecificationAlternative Name: Pteroylglutamic acid Formula: C19H19N7O6 MW: 441.4 CAS: 59-30-3 MI: 14: 4221 Purity: ≥97% (TLC) Appearance: Yellow to orange powder. Solubility: Soluble in diluted acids or alkaline solutions; slightly soluble in water or methanol; almost insoluble in organic solvents. Long Term Storage: +4°C Use/Stability: Alkaline solutions are reasonably stable. Other solutions may be light and heat sensitive.a Handling: Protect from light.