72004-62-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72004-62-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,0,0 and 4 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 72004-62:
(7*7)+(6*2)+(5*0)+(4*0)+(3*4)+(2*6)+(1*2)=87
87 % 10 = 7
So 72004-62-7 is a valid CAS Registry Number.
72004-62-7Relevant articles and documents
A convergent synthesis of optically active aspyrone
Sugiyama,Murayama,Yamashita
, p. 7343 - 7344 (1990)
Aspyrone (1) was elaborated in an optically pure form by the key reaction involving a nucleophilic addition of δ-lactone enolate to 2-tosyloxyaldehyde and a subsequent in situ formation of epoxide.