21813-62-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21813-62-7 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 2 respectively.
Calculate Digit Verification of CAS Registry Number 21813-62:
(7*2)+(6*1)+(5*8)+(4*1)+(3*3)+(2*6)+(1*2)=87
87 % 10 = 7
So 21813-62-7 is a valid CAS Registry Number.
21813-62-7Relevant articles and documents
Lactones, XVIII: Synthesis of Lactone-Bridged 1,1-Diarylpropanamines
Lehmann, Jochen,Gossen, Axel
, p. 443 - 445 (1988)
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.
