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49681-82-5

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49681-82-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49681-82-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,8 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 49681-82:
(7*4)+(6*9)+(5*6)+(4*8)+(3*1)+(2*8)+(1*2)=165
165 % 10 = 5
So 49681-82-5 is a valid CAS Registry Number.

49681-82-5Relevant articles and documents

Synthesis of tertiary sec-alkylamines by the addition of grignard reagents to N,N-dialkylformamides mediated by Ti(OiPr)4 and Me3SiCl

Tomashenko, Olesya,Sokolov, Viktor,Tomashevskiy, Alexander,Buchholz, Herwig A.,Welz-Biermann, Urs,Chaplinski, Vladimir,De Meijere, Armin

experimental part, p. 5107 - 5111 (2009/06/17)

A number of tertiary sec-alkylamines (22 examples, 29-80% yield) have been prepared according to a simple one-pot procedure by the addition of Grignard reagents to N,N-dialkylformamides in the presence of Ti(OiPr)4 and Me3SiCl. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

Selection of a Sommelet-Hauser or a Stevens Rearrangement Pathway of N,N-Dimethyl(substituted benzyl)ammonium N-Alkylides

Tanaka, Tetsuya,Shirai, Naohiro,Sugimori, Junji,Sato, Yoshiro

, p. 5034 - 5036 (2007/10/02)

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Carbon-13 nuclear magnetic resonance spectra of fentanyl analogs

Brine,Boldt,Huang,Sawyer,Carroll

, p. 677 - 686 (2007/10/02)

Natural abundance carbon-13 chemical shifts are reported for the hydrochloride salts of fentanyl and fifteen analogs. The signals are assigned on the basis of chemical shift theory, SFORD multiplicities, signal intensities, comparisons with model compounds, and thiophene carbon-proton coupling constants. In addition to its forensic value, the data suggest that the solution conformations of the analogs are similar to that of fentanyl hydrochloride.

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