CAS 518-44-5: Fluorescin

Description: Fluorescein, with the CAS number 518-44-5, is a synthetic organic compound known for its vibrant green fluorescence. It is a member of the xanthene dye family and is characterized by its bright yellow-green color in solution, which becomes more intense under ultraviolet light. Fluorescein is highly soluble in water and exhibits a pH-dependent fluorescence, with its emission intensity increasing in alkaline conditions. This compound has a molecular formula of C20H12O5 and a molecular weight of approximately 332.31 g/mol. It is commonly used in various applications, including as a fluorescent tracer in hydrology, a dye in biological studies, and in ophthalmology for diagnostic purposes, particularly in assessing corneal integrity. Additionally, fluorescein can be utilized in the development of fluorescent probes and markers in research. Its stability and ease of detection make it a valuable tool in both scientific and medical fields. However, it is important to handle fluorescein with care, as it can cause skin and eye irritation upon contact.

Formula: C₂₀H₁₄O₅

InChI: InChI=1S/C20H14O5/c21-11-5-7-15-17(9-11)25-18-10-12(22)6-8-16(18)19(15)13-3-1-2-4-14(13)20(23)24/h1-10,19,21-22H,(H,23,24)

InChI key: InChIKey=MURGITYSBWUQTI-UHFFFAOYSA-N

SMILES: O=C(O)C=1C=CC=CC1C2C3=CC=C(O)C=C3OC4=CC(O)=CC=C42

Synonyms:

• 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid
• Benzoic acid, 2-(3,6-dihydroxy-9H-xanthen-9-yl)-
• Benzoic acid, o-(3,6-dihydroxyxanthen-9-yl)-
• Fluorescin
• Leucofluorescein
• Resorcinolphthalin

FLUORESCIN

CAS: 518-44-5

• Formula: C₂₀H₁₄O₅
• Purity: 95%
• Color and Shape: Solid
• Molecular weight: 334.32216

Fluorescin [Reagent for Oxydases and Peroxydases]

CAS: 518-44-5

• Formula: C₂₀H₁₄O₅
• Purity: >95.0%(GC)
• Color and Shape: Light yellow to Brown powder to crystal
• Molecular weight: 334.33

Fluorescin

CAS: 518-44-5

Fluorescin

CAS: 518-44-5

• Purity: 98%
• Molecular weight: 334.3269958496094

Fluorescin [Reagent for Oxydases and Peroxydases]

CAS: 518-44-5

Fluorescin is a protein that is used as a reagent for the detection of oxydases …

• Formula: C₂₀H₁₄O₅
• Purity: Min. 95%
• Molecular weight: 334.33 g/mol