1-oxo-1,2-diphenyl-1λ5-phospha-spiro[4.4]nonan-3-one is a complex organic compound with the molecular formula C17H17OP. It features a unique structure, incorporating a phosphorus atom in a spiro arrangement with a nonane ring and a phenyl group. The compound is characterized by the presence of a carbonyl group (C=O) and a phosphorus atom in a five-membered ring, which contributes to its stability and reactivity. 1-oxo-1,2-diphenyl-1λ⁵-phospha-spiro[4.4]nonan-3-one is of interest in the field of organophosphorus chemistry, potentially for its applications in catalysis or as a precursor in the synthesis of more complex molecules. Its specific properties, such as solubility, reactivity, and potential uses, would be determined by further chemical analysis and experimentation.

40203-64-3

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Basic information
1. Product Name: 1-oxo-1,2-diphenyl-1λ⁵-phospha-spiro[4.4]nonan-3-one
2. Synonyms:
3. CAS NO:40203-64-3
4. Molecular Formula:
5. Molecular Weight: 324.359
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: 1-oxo-1,2-diphenyl-1λ⁵-phospha-spiro[4.4]nonan-3-one(CAS DataBase Reference)
10. NIST Chemistry Reference: 1-oxo-1,2-diphenyl-1λ⁵-phospha-spiro[4.4]nonan-3-one(40203-64-3)
11. EPA Substance Registry System: 1-oxo-1,2-diphenyl-1λ⁵-phospha-spiro[4.4]nonan-3-one(40203-64-3)
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: 40203-64-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 40203-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,0 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 40203-64:
(7*4)+(6*0)+(5*2)+(4*0)+(3*3)+(2*6)+(1*4)=63
63 % 10 = 3
So 40203-64-3 is a valid CAS Registry Number.

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