Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid, also known as 1,1-diphenyl-4-(4-diphenylbut-3-en-1-yl)phosphole oxide, is a complex organic compound with the molecular formula C31H25OP. It is a derivative of phosphole oxide, featuring a phosphorus atom bonded to two phenyl groups and a 4,4-diphenylbut-3-en-1-yl group. Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid is characterized by its unique structure, which includes a phosphorus atom in a five-membered ring with alternating double bonds, and is often used in the synthesis of various phosphorus-containing compounds. Its chemical properties and reactivity make it a valuable intermediate in organic chemistry, particularly in the preparation of phosphorus-based ligands and catalysts.

7528-18-9

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Basic information
1. Product Name: Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid
2. Synonyms:
3. CAS NO:7528-18-9
4. Molecular Formula:
5. Molecular Weight: 404.448
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: Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid(CAS DataBase Reference)
10. NIST Chemistry Reference: Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid(7528-18-9)
11. EPA Substance Registry System: Diphenyl-<4,4-diphenyl-but-3-en-1-inyl>-phosphinoxid(7528-18-9)
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: 7528-18-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 7528-18-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,2 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7528-18:
(6*7)+(5*5)+(4*2)+(3*8)+(2*1)+(1*8)=109
109 % 10 = 9
So 7528-18-9 is a valid CAS Registry Number.

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