139404-97-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139404-97-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,0 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139404-97:
(8*1)+(7*3)+(6*9)+(5*4)+(4*0)+(3*4)+(2*9)+(1*7)=140
140 % 10 = 0
So 139404-97-0 is a valid CAS Registry Number.
139404-97-0Relevant academic research and scientific papers
Asymmetric aza Diels-Alder reactions of amino acid ester imines with Brassard's diene
Waldmann,Braun,Drager
, p. 1231 - 1246 (2007/10/02)
Imines 1 obtained from aromatic, aliphatic or functionalized aldehydes and valine tert-butyl ester undergo Lewis acid catalyzed hetero Diels-Alder reactions with Brassard's diene 2. The cycloadducts are formed in good to high yields and with diastereomer
