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141421-16-1

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141421-16-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141421-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,4,2 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 141421-16:
(8*1)+(7*4)+(6*1)+(5*4)+(4*2)+(3*1)+(2*1)+(1*6)=81
81 % 10 = 1
So 141421-16-1 is a valid CAS Registry Number.

141421-16-1Downstream Products

141421-16-1Relevant articles and documents

Oxazol-5(4H)-ones. Part 7. New Synthesis of Oxazolopyridines

Gelmi, M. Luisa,Pocar, Donato,Viziano, Monica,Destro, Riccardo,Merati, Felicita

, p. 701 - 706 (2007/10/02)

Oxazolopyridines 4 are synthesized by heating the iminophosphoranes 1 and alkylideneoxazol-5(4H)-ones 2.At room temperature the reaction of 4-ethoxymethyleneoxazol-5(4H)-one 2f with iminophosphorane 1a yields the enamino lactone 6, which is, in turn, transformed by heating in acetic acid into the 2(1H)-pyridone 7.

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