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38844-23-4

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38844-23-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38844-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,8,4 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 38844-23:
(7*3)+(6*8)+(5*8)+(4*4)+(3*4)+(2*2)+(1*3)=144
144 % 10 = 4
So 38844-23-4 is a valid CAS Registry Number.

38844-23-4Relevant articles and documents

Stereospecific synthesis of amphetamines

Wagner, Jared M.,McElhinny Jr., Charles J.,Lewin, Anita H.,Carroll, F. Ivy

, p. 2119 - 2125 (2007/10/03)

Regioselective addition of aryl lithium to commercially available (S)-(+)-propylene oxide provides the corresponding (S)-aryl-2-propanol. The (R)-amphetamine is obtained by conversion of the alcohol to the tosylate followed by azide displacement and hydrogenation. Mitsunobu conversion of the alcohol to the (R)-bromide followed by azide displacement and hydrogenation affords the (S)-amphetamine.

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