109974-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109974-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,7 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109974-57:
(8*1)+(7*0)+(6*9)+(5*9)+(4*7)+(3*4)+(2*5)+(1*7)=164
164 % 10 = 4
So 109974-57-4 is a valid CAS Registry Number.
109974-57-4Relevant academic research and scientific papers
The Phospha-Cope Rearrangement of 4λ-Phospha-1-hexen-5-yne Derivatives
Kawashima, Takayuki,Miki, Yasuaki,Inamoto, Naoki
, p. 1883 - 1884 (2007/10/02)
The title compounds (1) were refluxed in hexanol to give the corresponding 1,4-pentadienylphosphinates, which seem to be formed via transient "phospha-allene derivatives", together with Michael adducts of alcohol to the triple bond of 1.
