21813-63-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21813-63-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,1 and 3 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21813-63:
(7*2)+(6*1)+(5*8)+(4*1)+(3*3)+(2*6)+(1*3)=88
88 % 10 = 8
So 21813-63-8 is a valid CAS Registry Number.
21813-63-8Relevant articles and documents
Lactones, XVIII: Synthesis of Lactone-Bridged 1,1-Diarylpropanamines
Lehmann, Jochen,Gossen, Axel
, p. 443 - 445 (2007/10/02)
Synthesis of the 3-amino-5,5-diaryl-4,5-dihydro-2(3H)-furanones 6a-h by addition of amines to the β-aroylacrylic acids 1-4 and treatment of 5a-h with phenyllithium closes the gap in the homologous series of γ-lactonized diarylalkanamines.