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91676-23-2

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91676-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91676-23-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,7 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91676-23:
(7*9)+(6*1)+(5*6)+(4*7)+(3*6)+(2*2)+(1*3)=152
152 % 10 = 2
So 91676-23-2 is a valid CAS Registry Number.

91676-23-2Downstream Products

91676-23-2Relevant articles and documents

MASS SPECTROMETRY OF 8-HYDROXYQUINOLINE DERIVATIVES

Ermakov, A. I.,Voronin, V. G.,Sorokin, A. A.,Epshtein, N. I.,Muravskaya, I. D.,et al.

, p. 637 - 642 (1984)

In contrast to the fragmentation of the corresponding alkyl aryl ethers, characteristic + and + fragments were observed in the fragmentation of 5-nitro(halo)-substituted 8-alkoxyquinolines.It was found by means of deuterium labeling that a hydrogen atom is split out primarily from the alkoxy group.It was demonstrated that an + fragment was from the + ion, which has a three-ring structure and quaternary nitrogen atom.The formation of an + fragment is characteristic for the fragmentation of 5(7)-nitro(halo)-substituted 8-hydroxyquinolines.The interrelationship between the intensities of the +, +, and + ion peaks and the protonation constants (pKa) of the investigated compounds is discussed.

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