Cas 149030-40-0,3-(4-Chloro-phenoxymethyl)-chromen-2-one

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Check Digit Verification of cas no

The CAS Registry Mumber 149030-40-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,0,3 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 149030-40:
(8*1)+(7*4)+(6*9)+(5*0)+(4*3)+(3*0)+(2*4)+(1*0)=110
110 % 10 = 0
So 149030-40-0 is a valid CAS Registry Number.

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149030-40-0Relevant academic research and scientific papers

Sigmatropic Rearrangement of 3-(Aryloxymethyl)coumarins: A Simple Synthesis of Hydroxylated 3-Benzylcoumarins

Majumdar, Krishna C.,Saha, Subrata,De, Rathindra N.,Ghosh, Santosh K.

, p. 715 - 718 (2007/10/02)

3-Aryloxymethylbenzopyran-2-ones 3a-e, when heated inn diphenyl ether for 4 h, gave high yields of hydroxylated 3-benzylbenzopyran-2-ones 4a-e, whereas 3-benzopyran-2-ones 3a, e in refluxing quinoline furnished 4-

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149030-40-0

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