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4684-84-8

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4684-84-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4684-84-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,8 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4684-84:
(6*4)+(5*6)+(4*8)+(3*4)+(2*8)+(1*4)=118
118 % 10 = 8
So 4684-84-8 is a valid CAS Registry Number.

4684-84-8Relevant articles and documents

Synthesis of piperidine derivatives by reduction of pyridinium salts

Tang, Zilong,Mayrargue, Joelle,Alami, Mouad

, p. 3367 - 3379 (2008/02/13)

Piperidine derivatives 1a-e and 2a-f have been prepared by the reduction of 3-and 4-substituted pyridinium salts with NaBH4 in moderate to excellent yields. The reactions regioselectively give 1,2,5,6-tetrahydropyridines, and the yields depend greatly upon the nature of substituents on the phenyl ring and on the nitrogen atom, the nature and the position of the substituents on the pyridyl ring, and the chain length between the aryloxy and the pyridyl groups. Copyright Taylor & Francis Group, LLC.

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