871110-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871110-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,1,1 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 871110-19:
(8*8)+(7*7)+(6*1)+(5*1)+(4*1)+(3*0)+(2*1)+(1*9)=139
139 % 10 = 9
So 871110-19-9 is a valid CAS Registry Number.
InChI:InChI=1/C18H16N2S/c1-21-18-16-12-11-13-7-5-6-10-15(13)17(16)20(19-18)14-8-3-2-4-9-14/h2-10H,11-12H2,1H3
871110-19-9Relevant articles and documents
Regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio) pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles
Peruncheralathan,Khan,Ila,Junjappa
, p. 10030 - 10035 (2007/10/03)
Highly efficient and regioselective synthesis of 1-aryl-3,4-substituted/ annulated-5-(methylthio)-pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/ annulated pyrazoles has been reported via cyclocondensation of arylhydrazines with either α-oxoketene dithioacetals or β-oxodithioesters.