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855297-19-7

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855297-19-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 855297-19-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,2,9 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 855297-19:
(8*8)+(7*5)+(6*5)+(5*2)+(4*9)+(3*7)+(2*1)+(1*9)=207
207 % 10 = 7
So 855297-19-7 is a valid CAS Registry Number.

855297-19-7Relevant articles and documents

Synthesis, structural studies and desilylation reactions of some N-2-(trimethylsilyl)ethyl-N-nitrosocarbamates

Thakkalapally, Arpitha,Benin, Vladimir

, p. 4939 - 4948 (2005)

The present report describes the preparation and characterization of several N-2-(trimethylsilyl)ethyl-N-nitrosocarbamates, designed as precursors to thermally unstable secondary N-nitrosocarbamate anions via fluoride-assisted cleavage. X-ray structural studies demonstrate that the core N-nitrosocarbamate moiety has a nearly planar geometry, with an s-E orientation at the N-N bond. DFT calculations (B3LYP/6-31+G(d)) reproduce accurately the structural features of the title compounds and detailed conformational analysis at the same level of theory addresses the long-standing issue of preferred geometries for three classes of related structures: N-nitrosocarbamates, N-nitrosoureas and N-nitrosoamides. Desilylation studies demonstrate that both the solvent and the fluoride concentration influence the rate of the process.

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