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77456-42-9

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77456-42-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77456-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,5 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77456-42:
(7*7)+(6*7)+(5*4)+(4*5)+(3*6)+(2*4)+(1*2)=159
159 % 10 = 9
So 77456-42-9 is a valid CAS Registry Number.

77456-42-9Downstream Products

77456-42-9Relevant academic research and scientific papers

Phase-Transfer Synthesis of Monoalkyl Ethers of Oligoethylene Glycols

Gibson, Thomas

, p. 1095 - 1098 (1980)

The effects of catalyst, temperature, solvent, and reagent ratios on the phase-transfer-catalyzed Williamson ether synthesis of monoalkyl ethers of oligoethylene glycols have been studied.A convenient method has been developed which gives reproducibly high yields of pure monoethers in the presence of aqueous sodium hydroxide.

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