154389-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 154389-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,3,8 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 154389-74:
(8*1)+(7*5)+(6*4)+(5*3)+(4*8)+(3*9)+(2*7)+(1*4)=159
159 % 10 = 9
So 154389-74-9 is a valid CAS Registry Number.
154389-74-9Relevant academic research and scientific papers
Preparation of β-trifluoromethyl-γ-butyrolactones via Claisen rearrangement
Haddad,Molines,Wakselman
, p. 167 - 169 (2007/10/02)
The Claisen rearrangement of allylic alcohol 2 provided the β- trifluoromethyl γ,δ-ethylenic ester 3 which gave access to a series of β- trifluoromethyl-γ-butyrolactones 1.
