658053-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 658053-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,8,0,5 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 658053-81:
(8*6)+(7*5)+(6*8)+(5*0)+(4*5)+(3*3)+(2*8)+(1*1)=177
177 % 10 = 7
So 658053-81-7 is a valid CAS Registry Number.
658053-81-7Relevant academic research and scientific papers
Synthesis of novel macrocyclic Di- and tetralactams containing triazole subunits
Elwahy, Ahmed H.M.,Abbas, Ashraf A.,Kassab, Refaie M.
, p. 551 - 559 (2007/10/03)
The new macrocyclic di- and tetralactams 9, 15, and 16 were obtained in 16-24% yields by heating the appropriate bis-amines 7 or 8 with the corresponding bisaldehyde 5 or 14 in refluxing acetic acid under high-dilution conditions.
