139420-79-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139420-79-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,2 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139420-79:
(8*1)+(7*3)+(6*9)+(5*4)+(4*2)+(3*0)+(2*7)+(1*9)=134
134 % 10 = 4
So 139420-79-4 is a valid CAS Registry Number.
139420-79-4Relevant academic research and scientific papers
3-Trimethylsilyloxy-oxetanes via a highly selective Paterno-Buchi reaction
Bach
, p. 7037 - 7038 (2007/10/02)
Benzaldehyde reacts photochemically with various trimethylsilyl enol ethers to furnish 3-trimethylsilyloxy-oxetanes in moderate to fair fields. The photocycloaddition proceeds with excellent regio- and diastereoselectivity.
