156-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156-21-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,5 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156-21:
(5*1)+(4*5)+(3*6)+(2*2)+(1*1)=48
48 % 10 = 8
So 156-21-8 is a valid CAS Registry Number.
156-21-8Relevant academic research and scientific papers
SOME DATA ON THE CHEMISTRY OF 5-NITRO-2-FURALDEHYDE, V. ANILINE DERIVATIVES
Csaszar, Jozsef
, p. 245 - 258 (2007/10/02)
UV, IR and 1H-NMR spectra of Schiff bases of 5-nitro-2-furaldehyde with mono- and disubstituted anilines have been investigated.The spectra measured in methanol, in acidic and basic media and in concentrated sulfuric acid are discussed in conne