Cas 98910-23-7,4-Hydroxy-7,8-dimethoxy-3-((E)-3-phenyl-allyl)-chromen-2-one

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Check Digit Verification of cas no

The CAS Registry Mumber 98910-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,1 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 98910-23:
(7*9)+(6*8)+(5*9)+(4*1)+(3*0)+(2*2)+(1*3)=167
167 % 10 = 7
So 98910-23-7 is a valid CAS Registry Number.

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98910-23-7Relevant academic research and scientific papers

Cinnamylation of 4-Hydroxycoumarins with Cinnamyl Alcohol

Ahluwalia, V. K.,Arora, K. K.,Mukherjee, Irani

, p. 298 - 299 (2007/10/02)

Condensation of 4-hydroxy-7-methoxy-8-methylcoumarin (1) with cinnamyl alcohol in the presence of orthophosphoric acid at 50-55 deg C affords 3,4-dihydro-8-methoxy-7-methyl-2-phenyl-2H,5H-pyranobenzopyran-5-one (4) and 3-cinnamyl-4-hydroxy-7-methoxy-8-methyl-2H-1-benzopyran-2-one (5).The former product is obtained exclusively when the reaction is carried out at 75-80 deg C.Similar results are obtained with other 4-hydroxycoumarins (2 and 3).

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