80639-52-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80639-52-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,6,3 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 80639-52:
(7*8)+(6*0)+(5*6)+(4*3)+(3*9)+(2*5)+(1*2)=137
137 % 10 = 7
So 80639-52-7 is a valid CAS Registry Number.
80639-52-7Relevant articles and documents
Homogeneous Metathesis of Unsaturated Nitriles
Bosma, Ruud H. A.,Kouwenhoven, Arjan P.,Mol, Johannes C.
, p. 1081 - 1082 (2007/10/02)
Unsaturated nitriles of general formula CH2=CHnCN, where 1 = n = 4, undergo metathesis in the presence of the catalyst system tungsten hexachloride-tetramethyltin with maximum reactivity for n = 2.
