7,11-bis(2-furyl)-3,3-dimethylspiro[5.5]undecane-1,5,9-trione is a complex organic compound with the molecular formula C21H22O5. It is a derivative of spiro compounds, which are cyclic compounds containing two rings that share a common atom. This specific compound features a spiro[5.5]undecane core, with two furyl groups (2-furyl) attached at the 7 and 11 positions, and three carbonyl groups (C=O) at the 1, 5, and 9 positions. The molecule also has two methyl groups (CH3) at the 3 position, contributing to its overall structure. 7,11-bis(2-furyl)-3,3-dimethylspiro<5.5>undecane-1,5,9-trione is known for its potential applications in various fields, including pharmaceuticals and materials science, due to its unique chemical properties and structural features.

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Basic information
1. Product Name: 7,11-bis(2-furyl)-3,3-dimethylspiro<5.5>undecane-1,5,9-trione
2. Synonyms:
3. CAS NO:856-81-5
4. Molecular Formula:
5. Molecular Weight: 354.403
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: 7,11-bis(2-furyl)-3,3-dimethylspiro<5.5>undecane-1,5,9-trione(CAS DataBase Reference)
10. NIST Chemistry Reference: 7,11-bis(2-furyl)-3,3-dimethylspiro<5.5>undecane-1,5,9-trione(856-81-5)
11. EPA Substance Registry System: 7,11-bis(2-furyl)-3,3-dimethylspiro<5.5>undecane-1,5,9-trione(856-81-5)
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: 856-81-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 856-81-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 856-81:
(5*8)+(4*5)+(3*6)+(2*8)+(1*1)=95
95 % 10 = 5
So 856-81-5 is a valid CAS Registry Number.

856-81-5Upstream product

856-81-5Downstream Products

73611-68-4 C₂₈H₃₀N₂O₆S

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