3-Phenylazo-4-hydroxy-2-oxo-pyrano[3,2-b]benzofuran is a complex organic compound with the molecular formula C20H11NO4. It is characterized by a pyrano[3,2-b]benzofuran core, which is a fused ring system consisting of a pyran (a six-membered oxygen-containing ring) and a benzofuran (a benzene ring fused with a furan, a five-membered oxygen-containing ring). The molecule features a phenylazo group (a phenyl ring connected to a nitrogen atom) at the 3-position and a hydroxyl group at the 4-position. The 2-oxo part indicates the presence of a carbonyl group (C=O) at the 2-position. 3-Phenylazo-4-hydroxy-2-oxo-pyrano<3,2-b>benzofuran is known for its potential applications in the field of chemistry, particularly in the synthesis of dyes and pigments, due to its unique structure and properties.

6906-82-7

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Basic information
1. Product Name: 3-Phenylazo-4-hydroxy-2-oxo-pyrano<3,2-b>benzofuran
2. Synonyms:
3. CAS NO:6906-82-7
4. Molecular Formula:
5. Molecular Weight: 306.277
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 3-Phenylazo-4-hydroxy-2-oxo-pyrano<3,2-b>benzofuran(CAS DataBase Reference)
10. NIST Chemistry Reference: 3-Phenylazo-4-hydroxy-2-oxo-pyrano<3,2-b>benzofuran(6906-82-7)
11. EPA Substance Registry System: 3-Phenylazo-4-hydroxy-2-oxo-pyrano<3,2-b>benzofuran(6906-82-7)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 6906-82-7(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 6906-82-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,0 and 6 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 6906-82:
(6*6)+(5*9)+(4*0)+(3*6)+(2*8)+(1*2)=117
117 % 10 = 7
So 6906-82-7 is a valid CAS Registry Number.

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