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20589-84-8

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20589-84-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20589-84-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,8 and 9 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20589-84:
(7*2)+(6*0)+(5*5)+(4*8)+(3*9)+(2*8)+(1*4)=118
118 % 10 = 8
So 20589-84-8 is a valid CAS Registry Number.

20589-84-8Upstream product

20589-84-8Relevant articles and documents

Chlorination of Esters. II. Chlorination of Methyl Esters of Heptanoic, Octanoic, Nonanoic and Decanoic Acids. The Isomer Distribution of Monochloro Esters Formed

Korhonen, Ilpo O.O.,Korvola, Jorma N. J.

, p. 461 - 464 (2007/10/02)

The chlorination of straight-chain carboxylic acid methyl esters from heptanoic to decanoic acid with chlorine in the liquid and vapour phase and with sulfuryl chloride in the liquid phase has been studied.The monochloro esters formed were analyzed by GLC, the isomer distributions indicating chlorination with chlorine to favour the (ω-1)-position and with sulfuryl chloride the (ω-2)-position.Both methods gave nearly the same results with exception of the ω-position, the substitution of an ω-hydrogen occurring with SO2Cl2 only to half of that with chlorine.A gas chromatogram of a combined mixture of chlorination products is given.

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