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1309576-54-2

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1309576-54-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1309576-54-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,5,7 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1309576-54:
(9*1)+(8*3)+(7*0)+(6*9)+(5*5)+(4*7)+(3*6)+(2*5)+(1*4)=172
172 % 10 = 2
So 1309576-54-2 is a valid CAS Registry Number.

1309576-54-2Downstream Products

1309576-54-2Relevant articles and documents

Catalyst-controlled torquoselectivity switch in the 4π ring-opening reaction of 2-amino-2-azetines giving β-substituted α,β- unsaturated amidines

Shindoh, Naoya,Kitaura, Kazuo,Takemoto, Yoshiji,Takasu, Kiyosei

, p. 8470 - 8473 (2011)

The torquoselectivity of the 4π electrocyclic ring-opening reaction of 2-azetines can be controlled by the Bronsted acidity of the catalyst and the polarity of the solvent. DFT calculations provided insight into the mechanism of this remarkable switch. Anti and syn stereoisomers of α,β-unsaturated amidines were selectively synthesized from ynamides and aldimines in the presence of Tf2NH and CSA, respectively.

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