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313547-14-7

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313547-14-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 313547-14-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,3,5,4 and 7 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 313547-14:
(8*3)+(7*1)+(6*3)+(5*5)+(4*4)+(3*7)+(2*1)+(1*4)=117
117 % 10 = 7
So 313547-14-7 is a valid CAS Registry Number.

313547-14-7Relevant articles and documents

Base-catalyzed synthesis of substituted indazoles under mild, transition-metal-free conditions

Thome, Isabelle,Besson, Claire,Kleine, Tillmann,Bolm, Carsten

, p. 7509 - 7513 (2013)

Back to basics: A transition-metal-free method developed for the synthesis of indazoles involves an inexpensive catalytic system composed of a diamine and K2CO3. Various (Z)-2-bromoacetophenone tosylhydrazones were converted into indazoles at room temperature in excellent yields (see example; Ts=p-toluenesulfonyl). The yield was improved by photoisomerization with UV light when E/Z isomeric mixtures of the starting material were used. Copyright

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