81558-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81558-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,5 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81558-20:
(7*8)+(6*1)+(5*5)+(4*5)+(3*8)+(2*2)+(1*0)=135
135 % 10 = 5
So 81558-20-5 is a valid CAS Registry Number.
81558-20-5Relevant articles and documents
TRIFLUOROMETHYLATION OF AROMATIC AMINO AND THIO COMPOUNDS BY BISTRIFLUOROMETHYL TELLURIDE
Naumann, D.,Pazenok, S. V.,Turra, V.
, p. 128 - 130 (2007/10/02)
The reaction of aromatic and heterocyclic amines with (CF3)2Te gave the products from trifluoromethylation in the aromatic ring.The reaction with the corresponding thiols gave S-trifluoromethyl derivatives.
