189438-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189438-89-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,4,3 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 189438-89:
(8*1)+(7*8)+(6*9)+(5*4)+(4*3)+(3*8)+(2*8)+(1*9)=199
199 % 10 = 9
So 189438-89-9 is a valid CAS Registry Number.
189438-89-9Relevant academic research and scientific papers
Manabe, Shino
, p. 2491 - 2492 (1997)
The aza-[2,3] sigmatropic rearrangement wits realized by using a phosphoramide group as a stabilization group of the carbanion. Not only (E)-substituted alkene, but also (Z)-, and trisubstituted alkene can be used as substrates.
