117648-83-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117648-83-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,4 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117648-83:
(8*1)+(7*1)+(6*7)+(5*6)+(4*4)+(3*8)+(2*8)+(1*3)=146
146 % 10 = 6
So 117648-83-6 is a valid CAS Registry Number.
InChI:InChI=1/C16H18N2O6/c1-9-15(16(19)24-5)11(8-17(9)2)10-6-13(22-3)14(23-4)7-12(10)18(20)21/h6-8H,1-5H3
117648-83-6Relevant articles and documents
Regioselective Reactions of Tetra- and Penta-substituted Pyrroles
Mukherjee, Anita,Sharma, V. L.,Seth, M.,Bhaduri, A. P.
, p. 537 - 541 (2007/10/02)
Regioselective formylation, hydroxymethylation and benzoylation in 1,2-dimethyl-3-methoxycarbonyl-4-phenyl- or substituted phenyl-pyrroles (1-4) lead to the formation of the corresponding 5-substituted derivatives (9-12).Chemoselectivity in the reaction o