Description
VIS-683 Pentamethine- is a cyanine PF6- polymethine dye with CAS number 1526918-65-9 and empirical formula C₄₃H₅₀ClF₆N₂P. It shows an absorption maximum in methanol of 683 nm and a molar mass of 775,30 g/mol, with EG number 813-225-1. The defined cyanine PF6- chromophore supports spectroscopic, optical and staining applications where a visible-range absorption profile near 683 nm is required. Material from manufacturer Carl ROTH is presented for straightforward handling in research and analytical settings. Laboratories can deploy VIS-683 Pentamethine- in method development, calibration series and comparative dye studies that rely on polymethine structures. The compact suits accurate weighing and small-scale experimental runs. As a specialised colourant reagent it complements broader chemicals and dyes inventories focused on polymethine systems and related pigment chemistry.
This article is part of Photometers & spectrophotometers, in Spectroscopy & photometry.
Key features
- CAS number: 1526918-65-9
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 813-225-1
- Empirical formula: C₄₃H₅₀ClF₆N₂P
- Molar mass: 775,30 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
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Questions about S 2086 - FEW Chemicals, 683 nm in MeOH, 1 g, glass
What is this article?
S 2086 - FEW Chemicals, 683 nm in MeOH, 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Photometers & spectrophotometers, inside Spectroscopy & photometry, in Lab instruments.
A photometer reads absorbance at one or a few wavelengths. A spectrophotometer scans or selects many. Both send light through a cuvette or a well. The wavelength range, UV or visible, and the bandwidth decide what can be measured. A visible-only instrument cannot read a nucleic acid at 260 nm.
A photometer or spectrophotometer sends light through a sample and reads how much was absorbed. In the range where the Beer–Lambert relation holds, absorbance tracks concentration. A refractometer reads how a liquid bends light, which tracks dissolved solids. A polarimeter reads the rotation of polarised light, the classical measurement for sugars. The lamp, the wavelength and the cuvette path length are the three things that have to be right before the number means anything. The optical quantities trace to NIST and the BIPM.
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Shelves beside this one are Refractometers & polarimeters and Lamps, cuvette holders & accessories.
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