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90331-54-7

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90331-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90331-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,3 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 90331-54:
(7*9)+(6*0)+(5*3)+(4*3)+(3*1)+(2*5)+(1*4)=107
107 % 10 = 7
So 90331-54-7 is a valid CAS Registry Number.

90331-54-7Downstream Products

90331-54-7Relevant articles and documents

PARTICIPATION OF SULFONATE IONS IN THE ELECTROPHILIC ADDITION OF HALOGENS TO OLEFINS

Zefirov, N. S.,Koz'min, A. S.,Dan'kov, Yu. V.,Zhdankin, V. V.,Kirin, V. N.

, p. 205 - 213 (2007/10/02)

The reactions of ethylene, 1-heptene, cyclohexene, and styrene with chlorine and bromine in methylene chloride and chloroform in the presence of tetrabutylammonium p-toluenesulfonate and tetrabutylammonium methanesulfonate were investigated.In all cases the 2-halogenoalkyl esters of the sulfonic acids were obtained with comparable yields in addition to the 1,2-dihalides.The addition of chlorine and bromine to cyclohexene and also of bromine to 1-heptene in acetic acid in the presence of lithium p-nitrobenzenesulfonate leads to 2-halogenoalkyl esters of the sulfonicacids and acetic acid in addition to the 1,2-dihalides.These data indicate concurrent combination of the sulfonate anions at the concluding stage of AdE reactions.The mechanistic aspects and consequences of this effect are discussed.

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