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120235-89-4

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120235-89-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120235-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,2,3 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 120235-89:
(8*1)+(7*2)+(6*0)+(5*2)+(4*3)+(3*5)+(2*8)+(1*9)=84
84 % 10 = 4
So 120235-89-4 is a valid CAS Registry Number.

120235-89-4Relevant articles and documents

Dehydroacetoxylation and Acetate Transesterification in the Reactions of erythro- and threo-Methyl 3-(Substituted acetoxy)-2-halogeno-3-phenylpropanoates with Triethylamine

Garay, Raul O.,Cabaleiro, Mercedes C.

, p. 1643 - 1648 (2007/10/02)

The response of the rate of triethylamine-induced dehydroacetoxylation of methyl threo-3-acetoxy-2-halogeno-3-phenylpropanoate to the influence of substituents in the leaving group points to a change in mechanism from (E1cB)I to a concerted process of the carbanion type.On the other hand, the erythro-isomers seem to undergo elimination exclusively through a carbanionic pathway.The effect of the acetoxy substituents upon the competitive transesterification is discussed.

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