1097189-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1097189-69-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,7,1,8 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1097189-69:
(9*1)+(8*0)+(7*9)+(6*7)+(5*1)+(4*8)+(3*9)+(2*6)+(1*9)=199
199 % 10 = 9
So 1097189-69-9 is a valid CAS Registry Number.
1097189-69-9Relevant articles and documents
Regio- and chemoselective synthesis of fully substituted thiophenes
Piller, Fabian M.,Knochel, Paul
supporting information; experimental part, p. 445 - 448 (2009/07/11)
(Chemical Equation Presented) A full functionalization of all four positions of the thiophene ring was achieved. Starting from readily available 2,5-dichlorothiophene, successive magnesiations of the 3- and 4-positions using TMPMgCl·LiCl furnish, after tr
