Description
Xanthene VIS-549 Diethylamino imino-benzimidazol-carbonitrile is a xanthene dye reagent with CAS number 52372-39-1 and empirical formula C₂₃H₁₉N₅O. It shows an absorption maximum of 549 nm in methanol and a molar mass of 381,44 g/mol, making it relevant for visible-range spectroscopic, fluorescence, and dye-chemistry applications that require a defined long-wavelength absorption profile. This reagent is available from manufacturer Carl ROTH for research and industrial laboratory settings. With EG number 257-885-3 and a clear methanol absorption reference at 549 nm, it can be documented consistently in method SOPs and material specifications. is practical for method setup, comparative dye studies, and controlled small-scale experimental work. Select this xanthene derivative when a VIS absorption maximum near 549 nm in methanol is required.

