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130483-43-1

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130483-43-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130483-43-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,4,8 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 130483-43:
(8*1)+(7*3)+(6*0)+(5*4)+(4*8)+(3*3)+(2*4)+(1*3)=101
101 % 10 = 1
So 130483-43-1 is a valid CAS Registry Number.

130483-43-1Relevant articles and documents

Flavonoids, 45 . A General and Efficient Synthesis of Hydroxyflavones and -chromones

Patonay, Tamas,Molnar, Denes,Muranyi, Zoltan

, p. 233 - 242 (2007/10/02)

An efficient and versatile method for the synthesis of flavones hydroxylated in either ring A or B and of chromones hydroxylated in is described.This approach is based on the acidic resin-promoted cyclodehydration and simultaneous deprotection of methoxymethoxylated 1-(2-hydroxyphenyl)propane-1,3-diones easily available by either the Baker-Venkataraman rearrangement or the Claisen condensation. - Key words: Amberlyst 15 / Baker-Venkataraman rearrangement / Claisen condensation / hydroxychromone / hydroxyflavone / methoxymethyl protection

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