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117457-21-3

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117457-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117457-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,4,5 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117457-21:
(8*1)+(7*1)+(6*7)+(5*4)+(4*5)+(3*7)+(2*2)+(1*1)=123
123 % 10 = 3
So 117457-21-3 is a valid CAS Registry Number.

117457-21-3Downstream Products

117457-21-3Relevant articles and documents

X=Y-ZH Systems as Potential 1,3-Dipoles. Part 9. Aza-allyl Anion Precursors from the Reaction of (1,3-Dioxoindan-2-ylidene)malononitrile with α-Amino Acids and their Methyl Esters

Grigg, Ronald,Mongkolaussavaratana, Theeravat

, p. 541 - 544 (2007/10/02)

Glycine, valine, and α-amino acid esters react with (1,3-dioxoindan-2-ylidene)malononitrile (1) by a Michael addition-elimination mechanism with replacement of one cyano group by the α-amino acid or α-amino acid ester entity.These adducts undergo a trieth

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