189289-15-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189289-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,2,8 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 189289-15:
(8*1)+(7*8)+(6*9)+(5*2)+(4*8)+(3*9)+(2*1)+(1*5)=194
194 % 10 = 4
So 189289-15-4 is a valid CAS Registry Number.
189289-15-4Relevant academic research and scientific papers
Synthesis of isoplagiochin A
Gerencser, Janos,Keserue, Gyoergy M.,Macsari, Istvan,Nogradi, Mihaly,Kajtar-Peredy, Maria,Szoelloesy, Aron
, p. 3666 - 3670 (2007/10/03)
An unambigous synthesis of the title compound (1) was carried out in 23 steps following a convergent scheme involving, as the key step, macrocyclization by an intramolecular Wittig reaction.
