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220957-67-5

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220957-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220957-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,9,5 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 220957-67:
(8*2)+(7*2)+(6*0)+(5*9)+(4*5)+(3*7)+(2*6)+(1*7)=135
135 % 10 = 5
So 220957-67-5 is a valid CAS Registry Number.

220957-67-5Downstream Products

220957-67-5Relevant articles and documents

The synthesis of ethyl 2-[(2,2-dibenzoyl)ethenyl]amino-3- dimethylaminopropenoate and its application to the synthesis of fused 3- aminopyran-2-ones and 3-aminoazolo- and -azinopyrimidin-4(4H)-ones

Sorsak, Gorazd,Grdadolnik, Simona Golic,Stanovnik, Branko

, p. 1275 - 1279 (2007/10/03)

Ethyl 2-[(2,2-dibenzoyl)ethenyl]amino-3-dimethylaminopropenoate (3) was prepared from dibenzoylmethane (1) in two steps, and used as a reagent for preparation of fused substituted 3-aminopyranones 12-15 in over 90% yield, quinolizin-4-one 16 in over 79% y

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