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100939-31-9

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100939-31-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100939-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,9,3 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100939-31:
(8*1)+(7*0)+(6*0)+(5*9)+(4*3)+(3*9)+(2*3)+(1*1)=99
99 % 10 = 9
So 100939-31-9 is a valid CAS Registry Number.

100939-31-9Relevant articles and documents

Regiochemical control of the ring opening of 1,2-epoxides by means of chelating processes.11. Ring opening reactions of aliphatic mono- and difunctionalized cis and trans 2,3- and 3,4-epoxy esters

Azzena, Francesca,Crotti, Paolo,Favero, Lucilla,Pineschi, Mauro

, p. 13409 - 13422 (2007/10/02)

The regiochemical outcome of the ring opening of 1,2-epoxides through chelation processes assisted by metal ions, was verified in the azidolysis of simple aliphatic cis and trans 2,3- and 3,4-epoxy esters and in the corresponding derivatives bearing an ether functionality (OBn) in an allylic relationship to the oxirane ring. The results indicate that the behavior of these epoxides is influenced both by the opening conditions (standard or metal-assisted) and the promoting metal salt [LiClO4 or Mg(ClO4)2]. Copyright

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