199786-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199786-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,7,8 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 199786-91:
(8*1)+(7*9)+(6*9)+(5*7)+(4*8)+(3*6)+(2*9)+(1*1)=229
229 % 10 = 9
So 199786-91-9 is a valid CAS Registry Number.
199786-91-9Relevant academic research and scientific papers
Total Synthesis of (+/-)-Roserine
Bunnell, Aaron E.,Flippin, Lee A.,Liu, Yanzhou
, p. 9305 - 9313 (2007/10/03)
Electrophilic cyclization of amino ketals 14a and 14b with 6 M HCl at 23 deg C, followed by oxidation with air in 6M HCl at 100 deg C, gave tetrahydrophenanthridines 16a and 16b, respectively, which were transformed into the pyrrolophenanthridinium salts
