Crystal violet lactone

• CAT Number: M050249
• CAS Number: 1552-42-7
• Molecular Formula: C26H29N3O2
• Molecular Weight: 415.5
• Purity: ≥95%
• Storage: -20°C
• IUPAC Name: 6-(dimethylamino)-3,3-bis[4-(dimethylamino)phenyl]-2-benzofuran-1-one
• InChI: InChI=1S/C26H29N3O2/c1-27(2)20-11-7-18(8-12-20)26(19-9-13-21(14-10-19)28(3)4)24-16-15-22(29(5)6)17-23(24)25(30)31-26/h7-17H,1-6H3
• InChIKey: IPAJDLMMTVZVPP-UHFFFAOYSA-N
• SMILES: CN(C)C1=CC=C(C=C1)C2(C3=C(C=C(C=C3)N(C)C)C(=O)O2)C4=CC=C(C=C4)N(C)C

Crystal Violet Lactone (Cat No.: M050249) is a leuco dye commonly used in thermochromic and pressure-sensitive applications. In its colorless lactone form, it exhibits reversible color change when exposed to acids, heat, or pressure, turning deep violet upon activation. CVL is a key component in carbonless copy paper, thermal paper, and smart inks. Its structure allows it to shift between colored and colorless states, making it valuable in sensory materials, security printing, and chemical detection systems where visual indicators are required.