α-Difluoromethyl-diphenylphosphonic acid, also known as α-Difluoromethyl-diphenylessigsaeure, is a chemical compound with the molecular formula C13H10F2O2P. It is a colorless to pale yellow crystalline solid that is soluble in organic solvents. α-Difluormethyl-diphenylessigsaeure is a derivative of diphenylphosphinic acid, featuring a difluoromethyl group (CF2H) attached to the α-carbon atom. It is used as a reagent in organic synthesis, particularly in the preparation of various phosphorus-containing compounds and as a ligand in transition metal catalysis. Due to its unique structure, it can influence the electronic properties and reactivity of the molecules it is incorporated into, making it a valuable tool in the field of chemistry.

891-89-4

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Basic information
1. Product Name: α-Difluormethyl-diphenylessigsaeure
2. Synonyms:
3. CAS NO:891-89-4
4. Molecular Formula:
5. Molecular Weight: 262.256
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: α-Difluormethyl-diphenylessigsaeure(CAS DataBase Reference)
10. NIST Chemistry Reference: α-Difluormethyl-diphenylessigsaeure(891-89-4)
11. EPA Substance Registry System: α-Difluormethyl-diphenylessigsaeure(891-89-4)
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: 891-89-4(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 891-89-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,9 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 891-89:
(5*8)+(4*9)+(3*1)+(2*8)+(1*9)=104
104 % 10 = 4
So 891-89-4 is a valid CAS Registry Number.

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