Polymethines are compounds made up from an odd number of methine groups (CH) bound together by alternating single and double bonds. Compounds made up from an even number of methine groups are known as polyenes.
Polymethines are fluorescent dyes that may be attached to nucleic acid probes for different uses, e.g. to accurately count reticulocytes.
- Kachovski and Dekhtyar, Dyes and Pigments, 22 (1983) 83-97
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