139285-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139285-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,8 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139285-99:
(8*1)+(7*3)+(6*9)+(5*2)+(4*8)+(3*5)+(2*9)+(1*9)=167
167 % 10 = 7
So 139285-99-7 is a valid CAS Registry Number.
139285-99-7Relevant academic research and scientific papers
Novel Synthesis of 4-Aroyl-6-phenylpyridazin-3(2H)-ones
Ismail, M. F.,Sayed, F. S.,Emara, S. A.,Shindy, A. A.
, p. 1720 - 1722 (2007/10/02)
4-Aroyl-6-phenylpyridazin-3(2H)-ones, 1H NMR Spectra4-Aroyl-6-phenylpyridazin-3(2H)-ones (4a-c) were synthesized by the oxidation of the corresponding 4-arylmethyl-6-phenylpyridazin-3(2H)-ones (3a-c) using sodium dichromate in glacial acetic acid.The reac
