81555-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81555-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,5 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81555-52:
(7*8)+(6*1)+(5*5)+(4*5)+(3*5)+(2*5)+(1*2)=134
134 % 10 = 4
So 81555-52-4 is a valid CAS Registry Number.
81555-52-4Relevant academic research and scientific papers
Dimerization of 3-Benzoyl-4-phenylisocrotonic Acid
Singh, Janak,Agarwal, Kanti P.,Singh, Gurbakhsh
, p. 2582 - 2589 (2007/10/02)
The acid-catalyzed self-condensation of acid 1a formed the tricyclic pseudoacid dichloride 3a, which on pyrolysis underwent a ring-expansion rearrangement to produce the dilactone 5a.The structures and stereochemistries of these dimeric compounds are dedu
