Cas 133137-59-4,3,7-Diacetoxydihydroflavanone

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Check Digit Verification of cas no

The CAS Registry Mumber 133137-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,3 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133137-59:
(8*1)+(7*3)+(6*3)+(5*1)+(4*3)+(3*7)+(2*5)+(1*9)=104
104 % 10 = 4
So 133137-59-4 is a valid CAS Registry Number.

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133137-59-4Relevant academic research and scientific papers

FLAVONOIDS AND ISOFLAVONOIDS FROM THE HEARTWOOD OF VIRGILIA OROBOIDES

Malan, Elfranco,Swinny, Ewald

, p. 3307 - 3309 (1990)

The heartwood of Virgilia oroboides contains 3-hydroxy-8,9-methylenedioxypterocarp-6a-ene, (2R,3R)-3,7-dihydroxyflavanone, (αR)-4-methoxy-α,2',4'-trihydroxydihydrochalcone, two pterocarpans and several other flavonoids and isoflavonoids.

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