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66623-75-4

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66623-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66623-75-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,2 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 66623-75:
(7*6)+(6*6)+(5*6)+(4*2)+(3*3)+(2*7)+(1*5)=144
144 % 10 = 4
So 66623-75-4 is a valid CAS Registry Number.

66623-75-4Downstream Products

66623-75-4Relevant academic research and scientific papers

Regioselective SNAr reactions of substituted difluorobenzene derivatives: practical synthesis of fluoroaryl ethers and substituted resorcinols

Ouellet, Stéphane G.,Bernardi, Anna,Angelaud, Remy,O'Shea, Paul D.

supporting information; experimental part, p. 3776 - 3779 (2009/10/11)

In this Letter, we describe a practical and highly selective method for the preparation of fluoroaryl ethers and differentially substituted resorcinol derivatives. This synthetic strategy relies on a selective SNAr of substituted difluorobenzen

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