139334-70-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139334-70-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,3 and 4 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139334-70:
(8*1)+(7*3)+(6*9)+(5*3)+(4*3)+(3*4)+(2*7)+(1*0)=136
136 % 10 = 6
So 139334-70-6 is a valid CAS Registry Number.
139334-70-6Relevant articles and documents
ON THE SYNTHESIS OF ISOANNULATED PYRROLES AND α-PYRIDONES
Eberbach, Wolfgang,Laber, Norbert
, p. 61 - 64 (1992)
The synthesis of furo- and thienopyridones 13a,b as well as the corresponding pyrroles 14a,b by using the 1,7-dipolar cyclization route of conjugated nitrones 9a,b is reported.In the presence of O2 and light thy pyridones are converted into the pyridinediones 17a,b.
