143251-73-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143251-73-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,5 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143251-73:
(8*1)+(7*4)+(6*3)+(5*2)+(4*5)+(3*1)+(2*7)+(1*3)=104
104 % 10 = 4
So 143251-73-4 is a valid CAS Registry Number.
143251-73-4Relevant articles and documents
Synthesis of curcuphenol methyl ether and 8-methoxycalamenene
Sattar, Abdus,Desai, Uday V .,Mane, Ramachandra B
, p. 446 - 448 (2007/10/02)
Friedel-Craft's acylation of m-cresol with glutaric anhydride, followed by esterification gives methyl 5-(2-hydroxy-4-methylphenyl)-5-oxopentanoate (4).Methylation of 4 followed by inverse Grignard reaction with methylmagnesium iodide yields an unsaturate