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38227-84-8

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38227-84-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38227-84-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,2,2 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 38227-84:
(7*3)+(6*8)+(5*2)+(4*2)+(3*7)+(2*8)+(1*4)=128
128 % 10 = 8
So 38227-84-8 is a valid CAS Registry Number.

38227-84-8Relevant articles and documents

LITHIUM DIALKYLAMIDES. 13C PARAMETERS AND SLOW PROTON TRANSFER

Fraser, Robert R.,Baignee, Alison,Bresse, Monique,Hata, Kazumi

, p. 4195 - 4198 (1982)

The changes in 13C chemical shifts for the structural change R2NH -> R2N-Li have been measured for a series of dialkylamines.These lithiation shifts are largest at the alpha carbon (3.7-9.7 ppm) and decrease in the order α > β > χ > δ.The rates of lithium-hydrogen interchange between R2NH and R'2N-Li have been determined.The activation energies are large (9 - 17 kcal/mole) and increase as the size of R or R' increases.The slow exchange permits the direct measurement of acidity differences between pairs of amines using 13C nmr.

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