143211-25-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143211-25-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,1 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 143211-25:
(8*1)+(7*4)+(6*3)+(5*2)+(4*1)+(3*1)+(2*2)+(1*5)=80
80 % 10 = 0
So 143211-25-0 is a valid CAS Registry Number.
143211-25-0Relevant articles and documents
Synthese von 4,4-Bis(trifluormethyl)-1-oxabuta-1,3-dienen
Burger, Klaus,Helmreich, Brigitte
, p. 219 - 226 (2007/10/02)
Silyl enol ethers (1) and hexafluoroacetone (2) react to give O-silylated aldol adducts 3 which, after desilylation with methanol/hydrochloric acid, are transformed into 4,4-bis(trifluoromethyl)-1-oxabuta-1,3-dienes (5) on treatment with trifluoroacetic a