143268-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143268-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,6 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143268-49:
(8*1)+(7*4)+(6*3)+(5*2)+(4*6)+(3*8)+(2*4)+(1*9)=129
129 % 10 = 9
So 143268-49-9 is a valid CAS Registry Number.
InChI:InChI=1/C12H16N2/c1-9(2)12-13(3)10-7-5-6-8-11(10)14(12)4/h5-8H,1-4H3
143268-49-9Relevant articles and documents
Synthesis, NMR Spectra, and Photoelectron Spectra of Cyclic Ketene N,X-Acetals (2-Alkylidene-N-heterocycles)
Quast, Helmut,Ach, Manfred,Kindermann, Markus K.,Rademacher, Paul,Schindler, Michael
, p. 503 - 516 (2007/10/02)
Deprotonation by sodium hydride of the N-methyl-2-alkylazolium salts 10c, 14-16, and 18 and of the perimidinium salt 20 as well affords the corresponding ketene N,X-acetals 1c, 3-5, 7 and 8 as air-sensitive distillable oils or low-melting crystals.The α-c