143771-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143771-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,7,7 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 143771-20:
(8*1)+(7*4)+(6*3)+(5*7)+(4*7)+(3*1)+(2*2)+(1*0)=124
124 % 10 = 4
So 143771-20-4 is a valid CAS Registry Number.
143771-20-4Relevant academic research and scientific papers
Stereoselective synthesis of β-hydroxy-α-amino acids from chiral cyanohydrins
Zandbergen,Brussee,Van Der Gen,Kruse
, p. 769 - 774 (2007/10/02)
An efficient one-pot reduction-transimination-hydrocyanation synthesis of β-hydroxy-α-cyanoamines 3 from optically active O-protected mandelonitrile (1) is described. These β-hydroxy-α-cyanoamines were easily converted into optically active (2S,3R) β-hydr
