131330-63-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131330-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,3 and 0 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131330-63:
(8*1)+(7*3)+(6*1)+(5*3)+(4*3)+(3*0)+(2*6)+(1*3)=77
77 % 10 = 7
So 131330-63-7 is a valid CAS Registry Number.
131330-63-7Relevant articles and documents
CYCLOADDITION REACTIONS OF VINYLCEPHALOSPORINS WITH DIAZOALKANES
Pitlik, Janos,Miskolczi, Istvan,Koever, Katalin E.,Jaszberenyi, Csaba J.,Sztaricskai, Ferenc
, p. 2005 - 2008 (1989)
In the reaction of a vinylcephalosporin (2) with diazoalkanes the initially formed 3-pyrazolinocephalosporins (3) underwent further reactions leading either to bispyrazolinocephalosporins (5) or to cyclopropylcephalosporins (6).
