75233-09-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75233-09-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,2,3 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 75233-09:
(7*7)+(6*5)+(5*2)+(4*3)+(3*3)+(2*0)+(1*9)=119
119 % 10 = 9
So 75233-09-9 is a valid CAS Registry Number.
75233-09-9Relevant articles and documents
Lewis Acid Catalyzed Cycloaddition of Methyl 2,3-Butadienoate to Alkenes
Snider, Barry B.,Spindell, David K.
, p. 5017 - 5020 (1980)
Methyl 2,3-butadienoate (1) undergoes EtAlCl2-catalyzed stereospecific cycloadditions with alkenes to give methyl cyclobutylideneacetates in good yield.The stereospecificity and ratios of E and Z isomers suggest a ?2s + sub