138175-34-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138175-34-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,7 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138175-34:
(8*1)+(7*3)+(6*8)+(5*1)+(4*7)+(3*5)+(2*3)+(1*4)=135
135 % 10 = 5
So 138175-34-5 is a valid CAS Registry Number.
138175-34-5Relevant articles and documents
Synthesis of vinyl and β-phthalimido ketones
Hammen,Braisted,Northrup
, p. 2157 - 2163 (1991)
Vinyl ketones are prepared by reaction of an aldehyde with a vinyl Grignard reagent followed by a Swern oxidation. β-Phthalimido ketones are then obtained by 1,4-addition of phthalimide.
