123420-35-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123420-35-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,2 and 0 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 123420-35:
(8*1)+(7*2)+(6*3)+(5*4)+(4*2)+(3*0)+(2*3)+(1*5)=79
79 % 10 = 9
So 123420-35-9 is a valid CAS Registry Number.
123420-35-9Relevant articles and documents
Synthesis of 4-Oxo-3,4-dihydro-1H-thieno- and thienothiadiazine 2,2-Dioxides
Goya, Pilar,Lissavetzky, Jaime,Rozas, Isabel
, p. 280 - 282 (2007/10/02)
4-Oxo-3,4-dihydro-1H-thienothiadiazine 2,2-dioxide (3) has been synthesized in a two-step approach involving sulfamoylation of 3-amino-4-methoxycarbonylthiophene (1) and subsequent ring closure.A modification of this procedure, which involve
