[2]Benzopyrano[4,3-b][1]benzopyran-5,7-dione,3,4,8,10-tetrahydroxy-9-methoxy- is a complex organic compound with the molecular formula C20H14O9. It is a derivative of benzopyran, a heterocyclic compound consisting of a benzene ring fused to a pyran ring. This specific compound features four hydroxyl groups (-OH) at the 3, 4, 8, and 10 positions, and a methoxy group (-OCH3) at the 9 position. The presence of these functional groups contributes to its chemical properties and potential applications in various fields, such as pharmaceuticals or natural product chemistry. The compound's structure and properties make it an interesting subject for further research and development.

549-20-2

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Basic information
1. Product Name: [2]Benzopyrano[4,3-b][1]benzopyran-5,7-dione,3,4,8,10-tetrahydroxy-9-methoxy-
2. Synonyms:
3. CAS NO:549-20-2
4. Molecular Formula:
5. Molecular Weight:
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: [2]Benzopyrano[4,3-b][1]benzopyran-5,7-dione,3,4,8,10-tetrahydroxy-9-methoxy- (CAS DataBase Reference)
10. NIST Chemistry Reference: [2]Benzopyrano[4,3-b][1]benzopyran-5,7-dione,3,4,8,10-tetrahydroxy-9-methoxy- (549-20-2)
11. EPA Substance Registry System: [2]Benzopyrano[4,3-b][1]benzopyran-5,7-dione,3,4,8,10-tetrahydroxy-9-methoxy- (549-20-2)
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: 549-20-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 549-20-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 549-20:
(5*5)+(4*4)+(3*9)+(2*2)+(1*0)=72
72 % 10 = 2
So 549-20-2 is a valid CAS Registry Number.

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