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72659-43-9

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72659-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72659-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,5 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 72659-43:
(7*7)+(6*2)+(5*6)+(4*5)+(3*9)+(2*4)+(1*3)=149
149 % 10 = 9
So 72659-43-9 is a valid CAS Registry Number.

72659-43-9Downstream Products

72659-43-9Relevant articles and documents

Phase-Transfer Synthesis of Monoalkyl Ethers of Oligoethylene Glycols

Gibson, Thomas

, p. 1095 - 1098 (2007/10/02)

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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