147919-03-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 147919-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,9,1 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 147919-03:
(8*1)+(7*4)+(6*7)+(5*9)+(4*1)+(3*9)+(2*0)+(1*3)=157
157 % 10 = 7
So 147919-03-7 is a valid CAS Registry Number.
147919-03-7Relevant academic research and scientific papers
Bischromonylarene-dicarboxylic acids
Wurm,Schnetzer
, p. 167 - 169 (2007/10/02)
In 1978 Chang and Hsu published the synthesis of the bischromonylbenzene-dicarboxylic acid 8a by SeO2 oxidation of the chalcone-carboxylic acid 3a. They claimed to have prepared 8a by Claisen-Schmidt condensation (CSC) of 1a and 2. When we trie
