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133619-21-3

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133619-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133619-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,1 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 133619-21:
(8*1)+(7*3)+(6*3)+(5*6)+(4*1)+(3*9)+(2*2)+(1*1)=113
113 % 10 = 3
So 133619-21-3 is a valid CAS Registry Number.

133619-21-3Downstream Products

133619-21-3Relevant articles and documents

BF3-promoted cyclization reaction of imines and salicylaldehyde with silyl enol ethers: unexpected formation of dioxaspiro compounds

Xin, Yong,Jiang, Huiling,Zhao, Jingwei,Zhu, Shizheng

, p. 9315 - 9319 (2008)

Unexpected spiro cyclic products were formed from the reaction of imines and salicylaldehyde with silyl enol ethers in the presence of BF3·OEt2. Different kinds of dioxaspiro products were afforded depending on the nature of starting

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