131905-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131905-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,0 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131905-74:
(8*1)+(7*3)+(6*1)+(5*9)+(4*0)+(3*5)+(2*7)+(1*4)=113
113 % 10 = 3
So 131905-74-3 is a valid CAS Registry Number.
131905-74-3Relevant articles and documents
Unusual amino acids VII. Asymmetric synthesis of 3- and 4-pyridylalanines
Doebler, Christian,Kreuzfeld,Michalik,Krause
, p. 117 - 125 (2007/10/03)
(Z)-2-N-Acylamino-3-pyridyl-acrylic acids and their esters were prepared by partially known procedures and hydrogenated in the presence of HBF4 to the corresponding optically active 2-N-acetyl-(or benzoyl-)-3-(3- or 4-pyridyl)-alanines or analo
