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6258-54-4

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6258-54-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6258-54-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,5 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6258-54:
(6*6)+(5*2)+(4*5)+(3*8)+(2*5)+(1*4)=104
104 % 10 = 4
So 6258-54-4 is a valid CAS Registry Number.

6258-54-4Relevant articles and documents

SYNTHETIC METHODS. PART 23. REARRANGEMENT OF SOME HYDROXAMIC ACIDS INTO AMIDES. A SELF-CONDENSATION LEADING TO DISPROPORTIONATION

Hassner, Alfred,Ruse, Margareta,Gottlieb, Hugo E.,Cojocaru, Miriam

, p. 733 - 738 (2007/10/02)

Pyruvic acids have been shown to react with p-nitroso-N,N-dimethylaniline (1) to produce p-dimethyl-aminoacetanilides (3) via the corresponding hydroxamic acids (4).Three such intermediates (4a, c, d) have been isolated and their structure proved by n.m.r. and mass spectroscopy and elemental analysis.Solutions of the hydroxamic acids (4) have been shown to undergo concentration-dependent self-condensation and disproportionation leading to the amides (3) and acids (5).Rational pathways for these transformations are discussed.Spectral correlations permit differentiation between the amides (3) and the corresponding hydroxamic acids (4).

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