109818-19-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109818-19-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,1 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 109818-19:
(8*1)+(7*0)+(6*9)+(5*8)+(4*1)+(3*8)+(2*1)+(1*9)=141
141 % 10 = 1
So 109818-19-1 is a valid CAS Registry Number.
109818-19-1Relevant articles and documents
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Gaied, Lilia Ben,Zantour, Hedi
, p. 17 - 32 (2000)
The reaction of β-diketones, ethylacetoacetate and malononitrile with α, β-insaturated β, β-difunctionnalized phosphonates constitutes a performant new route leading to the formation of substituted 2-amino-4-phosphono-4H-pyranes. Moreover the reaction of dialkylphosphonates with 2-hydroxybenzylidenemalononitrile affords a new series of phosphorylated benzopyranes.
