181587-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181587-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,5,8 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181587-69:
(8*1)+(7*8)+(6*1)+(5*5)+(4*8)+(3*7)+(2*6)+(1*9)=169
169 % 10 = 9
So 181587-69-9 is a valid CAS Registry Number.
181587-69-9Relevant academic research and scientific papers
Novel construction of 5-methylenepyrrol-2-ones by intramolecular cyclization of selenium-stabilized alkynyl amides
Yoshimatsu, Mitsuhiro,Machida, Keigo,Fuseya, Takayo,Shimizu, Hiroshi,Kataoka, Tadashi
, p. 1839 - 1843 (2007/10/03)
(Z)-5-(Phenylselenomethylene)pyrrol-2-ones 18-22 have been obtained in good yields from the cyclization of ω-seleno-substituted alkynyl amides 11-15 with ButOK-18-crown-6.
