The molecular formula of parent coumarin is C₉H₆O₂, and its relative molecular mass is 146.14. According to the 2H-chromen-2-one numbering system, the endocyclic oxygen atom is at position 1, the lactone carbonyl carbon is at position 2, and C3 and C4 form a double bond; the hydrogen-bearing, ...
Coumarins are a family of compounds built on the 2H-chromen-2-one core scaffold. Their frequent cross-disciplinary appearance is not simply because they are “widely used,” but because a single scaffold exhibits predictable and tunable structure–property relationships: substitution and ring ...
危险品化学品经营许可证（带存储）