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137709-60-5

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137709-60-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137709-60-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,0 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137709-60:
(8*1)+(7*3)+(6*7)+(5*7)+(4*0)+(3*9)+(2*6)+(1*0)=145
145 % 10 = 5
So 137709-60-5 is a valid CAS Registry Number.

137709-60-5Downstream Products

137709-60-5Relevant articles and documents

"Metal ion electrophilic catalysis" in ring-opening reactions of 1,2-epoxides by metal halides in ionic liquids

Betti, Cecilia,Landini, Dario,Maia, Angelamaria

, p. 1335 - 1338 (2006)

Metal ion electrophilic catalysis (Li+ > Na+ ? K+) has been found in ring-opening reactions of 1,2-epoxides 1-5 by metal halides MHa1 in ionic liquids. The results have been rationalized on the basis of a transition state where the cation M+ stabilizes the negative charge developing on the oxygen atom of the oxirane ring while favoring the nucleophilic attack at the adjacent carbon by the ion-paired anion Hal -. Georg Thieme Verlag Stuttgart.

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