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117508-91-5

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117508-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117508-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,5,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117508-91:
(8*1)+(7*1)+(6*7)+(5*5)+(4*0)+(3*8)+(2*9)+(1*1)=125
125 % 10 = 5
So 117508-91-5 is a valid CAS Registry Number.

117508-91-5Downstream Products

117508-91-5Relevant articles and documents

VICARIOUS NUCLEOPHILIC SUBSTITUTION OF HYDROGEN ORTHO TO THE NITRO GROUP BY TERTIARY CARBANIONS OF α-CHLOROALKYL PHENYL SULPHONES

Mudryk, Boguslav,Makosza, Mieczyslaw

, p. 209 - 214 (2007/10/02)

The tertiary carbanions of α-chloroalkyl phenyl sulphones readily enter the vicarious nucleophilic substitution of hydrogen ortho to the nitro group with a number of 4- and 3-substituted nitrobenzenes, when potassium tert-butoxide/DMF base-solvent system at -40 deg C + -30 deg C is employed.

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