121773-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121773-28-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,7 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121773-28:
(8*1)+(7*2)+(6*1)+(5*7)+(4*7)+(3*3)+(2*2)+(1*8)=112
112 % 10 = 2
So 121773-28-2 is a valid CAS Registry Number.
121773-28-2Relevant academic research and scientific papers
NEW SYNTHESIS OF SPIRO-BENZOPYRAN AMINO ACIDS BY INTRAMOLECULAR AMIDOALKYLATION
Urban, Frank J.
, p. 5493 - 5496 (2007/10/02)
A new synthesis of spiro-benzopyran amino acids is presented.The key reaction is the intramolecular amidoalkylation of methyl 2-benzamido-4-(4-fluorophenoxy)-2-methoxybutyrate to yield methyl 4-benzamido-2,3-dihydro-6-fluoro-4H-benzopyran-4-carboxylate.
