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145439-59-4

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145439-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 145439-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,4,3 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 145439-59:
(8*1)+(7*4)+(6*5)+(5*4)+(4*3)+(3*9)+(2*5)+(1*9)=144
144 % 10 = 4
So 145439-59-4 is a valid CAS Registry Number.

145439-59-4Relevant articles and documents

The Preparation of (α-Alkylidene)tetrahydrofuran by Tungsten Catalyzed Decarboxylation of Aldol Precursors

Tanzawa, Tomoya,Schwartz, Jeffrey

, p. 6783 - 6786 (2007/10/02)

A series of substituted (α-alkylidene)tetrahydrofurans was prepared by tungsten catalyzed reaction of substituted hydroxyfuroic acids.These reactions likely involve β-lactone intermediates which decarboxylate under the reaction conditions, and rates for o

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