203511-07-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203511-07-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,5,1 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 203511-07:
(8*2)+(7*0)+(6*3)+(5*5)+(4*1)+(3*1)+(2*0)+(1*7)=73
73 % 10 = 3
So 203511-07-3 is a valid CAS Registry Number.
203511-07-3Relevant academic research and scientific papers
A convenient synthesis of 2H-3,4-dihydro-1,4-benzothiazines
Sauleau, Armelle,David, Michele,Sauleau, Jean
, p. 4105 - 4121 (2007/10/03)
Aminothioalkenols react with paratoluenesulfonic acid in benzene or with phosphoric acid in toluene, and provide mainly heterocyclization in 2H-3,4- dihydro-1,4-benzothiazines; formation of some indenes and diene (in one case) was observed too.
