28090-93-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28090-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,0,9 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 28090-93:
(7*2)+(6*8)+(5*0)+(4*9)+(3*0)+(2*9)+(1*3)=119
119 % 10 = 9
So 28090-93-9 is a valid CAS Registry Number.
28090-93-9Relevant academic research and scientific papers
A CONVERGENT SYNTHETIC ROUTE TO THE QUETTAMINES AND THE 7,8-DIOXYGENATED TETRAHYDROBENZYLISOQUINOLINE ALKALOIDS
Chattopadhyay, Sankar,Shamma, Maurice
, p. 697 - 701 (2007/10/02)
(+/-)-Quettamine (1) chloride, (+/-)-norjuziphine (12), (+/-)-juziphine (13) and (+/-)-oblongine (14) iodide have been synthesized.
