4-xanthen-9-ylidenemethyl-phenol, also known as fluorescein or 3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, is a synthetic organic compound characterized by its bright yellow color and strong fluorescence properties. It is widely used as a pH indicator, with a color change from yellow to red as the pH increases from 6.0 to 7.4. Additionally, fluorescein is employed as a tracer in various applications, including water quality monitoring, medical diagnostics, and biological research. Its chemical structure consists of a xanthene core with two hydroxyl groups at the 3' and 6' positions, and a phenolic group attached to the 4-position. The compound's unique properties make it a valuable tool in a range of scientific and industrial fields.
2961-55-9
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Basic information
- Product Name: 4-xanthen-9-ylidenemethyl-phenol
- Synonyms:
- CAS NO:2961-55-9
- Molecular Formula:
- Molecular Weight: 286.33
- EINECS: N/A
- Product Categories: N/A
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: N/A
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: 4-xanthen-9-ylidenemethyl-phenol(CAS DataBase Reference)
- NIST Chemistry Reference: 4-xanthen-9-ylidenemethyl-phenol(2961-55-9)
- EPA Substance Registry System: 4-xanthen-9-ylidenemethyl-phenol(2961-55-9)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 2961-55-9(Hazardous Substances Data)
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Check Digit Verification of cas no
The CAS Registry Mumber 2961-55-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,6 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.Calculate Digit Verification of CAS Registry Number 2961-55:
(6*2)+(5*9)+(4*6)+(3*1)+(2*5)+(1*5)=99
99 % 10 = 9
So 2961-55-9 is a valid CAS Registry Number.
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2961-55-9Downstream Products
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4-xanthen-9-ylidenemethyl-phenol
