CAS 517-45-3
:9-(9H-Xanthen-9-ylidene)-9H-xanthene
Description:
9-(9H-Xanthen-9-ylidene)-9H-xanthene, commonly known as fluorescein, is a synthetic organic compound characterized by its vibrant fluorescent properties. It appears as a bright yellow-green powder or crystalline solid and is soluble in water and alcohols, making it useful in various applications. The compound features a xanthene core structure, which contributes to its strong light absorption and emission characteristics, particularly in the visible spectrum. Fluorescein is widely used as a fluorescent tracer in biological and environmental studies, as well as in microscopy and flow cytometry. Additionally, it has applications in the medical field, particularly in ophthalmology for dyeing contact lenses and assessing corneal integrity. The compound is generally considered safe for use, although it can cause irritation upon contact with skin or eyes. Its stability under normal conditions allows for a range of experimental applications, while its fluorescent properties make it a valuable tool in scientific research and diagnostics.
Formula:C26H16O2
InChI:InChI=1/C26H16O2/c1-5-13-21-17(9-1)25(18-10-2-6-14-22(18)27-21)26-19-11-3-7-15-23(19)28-24-16-8-4-12-20(24)26/h1-16H
InChI key:InChIKey=SXXWAWNPJCEOGD-UHFFFAOYSA-N
SMILES:C1(C=2C(OC=3C1=CC=CC3)=CC=CC2)=C4C=5C(OC=6C4=CC=CC6)=CC=CC5
Synonyms:- 9,9-Bixanthenylidene
- 9,9′-Bixanthylidene
- 9-(9H-xanthen-9-ylidene)-9H-xanthene
- 9H-Xanthene, 9-(9H-xanthen-9-ylidene)-
- Bixanthylidene
- Dixanthylene
- Dixanthylidene
- NSC 15906
- Δ<sup>9,9′</sup>-Bixanthene
- Δ9,9′-Bixanthene
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