77897-15-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77897-15-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,9 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77897-15:
(7*7)+(6*7)+(5*8)+(4*9)+(3*7)+(2*1)+(1*5)=195
195 % 10 = 5
So 77897-15-5 is a valid CAS Registry Number.
77897-15-5Relevant academic research and scientific papers
Eltamany, Sayed H.,Hopf, Henning
, p. 4901 - 4904 (1980)
Starting from 4, 5, 12, 13-tetrakis(methoxycarbonil)paracyclophane (1), the penta-(4), hexa-(6a-c), hepta-(7), and octamethyl-(8) derivatives have been prepared by a repetative formylation-reduction sequence.
