L-Menthol Crystals, USP is used as a local anesthetic and to reliee thrait irritation. MSDS health (2) Fire Hazard (2) Reactivity (0) Item Number: MC-3137CAS: 2216-51-5Molecular Weight: 156.27L-Menthol Crystals, USP$79.00PriceQuantity*SelectQuantity*Add to Cart