220332-88-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220332-88-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,3 and 2 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 220332-88:
(8*2)+(7*2)+(6*0)+(5*3)+(4*3)+(3*2)+(2*8)+(1*8)=87
87 % 10 = 7
So 220332-88-7 is a valid CAS Registry Number.
220332-88-7Relevant articles and documents
A convenient preparation of α-keto esters by the Grignard reaction on N-acylpyrazoles
Kashima, Choji,Shirahata, Yoshie,Tsukamoto, Yoshihiro
, p. 459 - 464 (2007/10/03)
The α-keto esters were prepared by the formation of N-acylpyrazole followed by the appropriate Grignard reaction. These short step reaction conveniently afforded various α-keto esters in good yields.
