52161-83-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52161-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,1,6 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 52161-83:
(7*5)+(6*2)+(5*1)+(4*6)+(3*1)+(2*8)+(1*3)=98
98 % 10 = 8
So 52161-83-8 is a valid CAS Registry Number.
52161-83-8Relevant articles and documents
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.
