171857-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171857-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,8,5 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 171857-87:
(8*1)+(7*7)+(6*1)+(5*8)+(4*5)+(3*7)+(2*8)+(1*7)=167
167 % 10 = 7
So 171857-87-7 is a valid CAS Registry Number.
171857-87-7Relevant academic research and scientific papers
Tandem enyne allene-radical cyclization via base-catalyzed isomerization of enediyne sulfones
Grissom,Wisniewski, Janet,Klingberg
, p. 6607 - 6610 (2007/10/02)
Enediyne sulfones 12-16 undergo a base-catalyzed isomerization to the corresponding enyne allenes followed by a tandem enyne allene-radical cyclization at 37°C to provide 2,3-dihydrobenz[e]indenes 17-21 in good yields.
