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188429-02-9

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188429-02-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188429-02-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,4,2 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 188429-02:
(8*1)+(7*8)+(6*8)+(5*4)+(4*2)+(3*9)+(2*0)+(1*2)=169
169 % 10 = 9
So 188429-02-9 is a valid CAS Registry Number.

188429-02-9Downstream Products

188429-02-9Relevant articles and documents

Green chemical synthesis of 2-benzenesulfonyl-pyridine and related derivatives

Trankle, William G.,Kopach, Michael E.

supporting information, p. 913 - 917 (2012/12/30)

A practical synthesis of 2-benzenesulfonylpyridine, 1, is described which is a key starting material for the manufacture of an investigational new drug candidate at Eli Lilly and Company. An optimized green chemical process was developed which features a novel tandem SNAr/oxidation under mild conditions to produce the target sulfone, 1, in 86% yield and>99% purity. In addition, this novel, environmentally friendly methodology was found to be general for the synthesis of substituted aromatic pyridyl sulfides and sulfones.

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