158137-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158137-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,1,3 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 158137-71:
(8*1)+(7*5)+(6*8)+(5*1)+(4*3)+(3*7)+(2*7)+(1*1)=144
144 % 10 = 4
So 158137-71-4 is a valid CAS Registry Number.
158137-71-4Relevant articles and documents
Dimethyl-(4-methyl-1-cyclohexenyl)methyl and 2-(1-methylethylidene)-5- methylcyclohexyl ethers from pulegone
Spencer
, p. 1603 - 1615 (1994)
NaBH4 reduction of pulegone (1) in short chain alcohols followed by acidification of the reaction mixture gives dimethyl-(4-methyl-1- cyclohexenyl) ethers. Acid catalyzed transetherification of these ethers in longer chain alcohols yields mixtures of the title compounds.
