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34239-90-2

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34239-90-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34239-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,3 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 34239-90:
(7*3)+(6*4)+(5*2)+(4*3)+(3*9)+(2*9)+(1*0)=112
112 % 10 = 2
So 34239-90-2 is a valid CAS Registry Number.

34239-90-2Relevant articles and documents

Ring opening of cyclic anhydrides: Synthesis of achiral half-esters using Lewis acids

Sabitha, Gowravaram,Srividya,Yadav

, p. 4015 - 4018 (1999)

A rapid and high yield preparation of half-esters from cyclic anhydrides using alcohols and Lewis acids is described.

MODULATORS OF HEMOGLOBIN

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Paragraph 0147; 0149, (2021/10/11)

The present disclosure relates generally to compounds and pharmaceutical compositions suitable as modulators of hemoglobin and methods for their use in treating disorders mediated by hemoglobin. (Formula (I))

Selective transesterification of aliphatic acids in the presence of aromatic acids using silica gel supported NaHSO4 catalyst

Das,Venkataiah

, p. 1671 - 1672 (2007/10/03)

Acidolysis of EtOAc in the presence of silica gel supported NaHSO4 catalyst has been applied for the protection of aliphatic nonconjugated carboxylic acids through the formation of esters.

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