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114342-11-9

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114342-11-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 114342-11-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,3,4 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 114342-11:
(8*1)+(7*1)+(6*4)+(5*3)+(4*4)+(3*2)+(2*1)+(1*1)=79
79 % 10 = 9
So 114342-11-9 is a valid CAS Registry Number.

114342-11-9Relevant articles and documents

Studies on the Biosynthesis of Clavulanic Acid. Part 4. Synthetic Routes to the Monocyclic β-Lactam Precursor, Proclavaminic Acid

Baggaley, Keith H.,Elson, Stephen W.,Nicholson, Neville H.,Sime, John T.

, p. 1513 - 1520 (2007/10/02)

Aldol condensation of 3-substituted propionaldehydes with the lithium enolate of ethyl or benzyl(2-oxoazetidin-1-yl)acetate yielded derivatives of proclavaminic acid.The proportion of the threo diastereoisomer in the aldol product could be increased by th

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