89455-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89455-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,4,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89455-91:
(7*8)+(6*9)+(5*4)+(4*5)+(3*5)+(2*9)+(1*1)=184
184 % 10 = 4
So 89455-91-4 is a valid CAS Registry Number.
89455-91-4Relevant academic research and scientific papers
A NEW ROUTE TO SPIRO-KETALS USING THE HORNER-WITTING REACTION OF 2-DIPHENYLPHOSPHINOXY CYCLIC ETHERS
Ley, Steven V.,Lygo, Barry
, p. 113 - 116 (2007/10/02)
Two insect pheromones along with other spiro-ketals have been synthesised by a new route which involves Horner-Wittig coupling of 2-diphenylphosphinoxy cyclic ethers with aldehydes and lactols followed by acid catalysed cyclisation.
