80308-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80308-99-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,3,0 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 80308-99:
(7*8)+(6*0)+(5*3)+(4*0)+(3*8)+(2*9)+(1*9)=122
122 % 10 = 2
So 80308-99-2 is a valid CAS Registry Number.
80308-99-2Relevant academic research and scientific papers
Reactivity of 2'-Hydroxy-3',4'-benzochalkone Dibromides
Paranjape, M. V.,Wadokar, K. N.
, p. 808 - 809 (2007/10/02)
Bromination of 2'-hydroxy-4-methoxy-3',4'-benzochalkone (Ia) with 2 mol of bromine in acetic acid gives 5'-bromo-2'-hydroxy-4-methoxy-3',4'-benzochalkone α,β-dibromide (IIa) which on treatment with hot aq. ethanolic alkali or pyridine does not give the ex
