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99834-10-3

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99834-10-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99834-10-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,3 and 4 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99834-10:
(7*9)+(6*9)+(5*8)+(4*3)+(3*4)+(2*1)+(1*0)=183
183 % 10 = 3
So 99834-10-3 is a valid CAS Registry Number.

99834-10-3Relevant academic research and scientific papers

Experimental and quantum chemical evidences for C-H···N hydrogen bonds involving quaternary pyridinium salts and pyridinium ylides

Dega-Szafran,Schroeder,Szafran,Szwajca,L?ska,Lewandowska

, p. 31 - 42 (2000)

The rates of equilibrium of eight quaternary pyridinium salts containing activated methylene groups with the corresponding ylides have been measured in DMSO solution containing strong bases (DBU, MTBD and P1-tBu). The effect of the ring substituents on th

Keto-Enol Tautomerism and Ionisation of 1-Phenacylpyridinium Ions: a Model for Carbanion-stabilisation of Azomethine Ylides

Carey, A. R. Edwin,O'Ferrall, Rory A. More,Murray, Brian A.

, p. 2297 - 2302 (2007/10/02)

Measurement of equilibrium constants for keto-enol tautomerism (KT) and ionisation (Ka) of 1-phenacylpyridinium and 1-phenacyl(4-dimethylamino) pyridium ions gives pKT (-log KT) = 6.10 and 5.55 and pKa/sub

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