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293744-01-1

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293744-01-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 293744-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,3,7,4 and 4 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 293744-01:
(8*2)+(7*9)+(6*3)+(5*7)+(4*4)+(3*4)+(2*0)+(1*1)=161
161 % 10 = 1
So 293744-01-1 is a valid CAS Registry Number.

293744-01-1Relevant articles and documents

Toward a total synthesis of stigmatellin; Obtention of an advanced fragment from gallic acid

Domon,Uguen

, p. 5501 - 5505 (2007/10/03)

Treatment by a base, then an acid, of the ester 3, which was prepared by starting from gallic acid 7a, afforded the chromone 6c, whose Swern oxidation, followed by condensation of the resulting aldehyde 6a with the trienyl lithium derivative 13b and methyl iodide, furnished products isomeric with, but not strictly identical to, an authentic sample of O-benzyl stigmatellin 1c. (C) 2000 Elsevier Science Ltd.

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