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81254-50-4

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81254-50-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81254-50-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,5 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81254-50:
(7*8)+(6*1)+(5*2)+(4*5)+(3*4)+(2*5)+(1*0)=114
114 % 10 = 4
So 81254-50-4 is a valid CAS Registry Number.

81254-50-4Relevant academic research and scientific papers

CONFORMATIONAL ANALYSIS OF AMPHETAMINE IN SOLUTION BASED ON UNAMBIGUOUS ASSIGNMENT OF THE DIASTEREOTOPIC BENZYLIC PROTONS IN THE (1)H NMR SPECTRA

Makriyannis, Alexandros,Knittel, James

, p. 4631 - 4634 (2007/10/02)

The erythro- and threo-amphetamine-β-d diastereomers were synthesized and used for the unambiguous assignment of the diastereotopic benzylic protons and the mesurement of vicinal (1)H-(1)H coupling constants which were used to determine the distribution of rotamers around the central Cα-Cβ bond in the side chain.

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