720657-98-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 720657-98-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,0,6,5 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 720657-98:
(8*7)+(7*2)+(6*0)+(5*6)+(4*5)+(3*7)+(2*9)+(1*8)=167
167 % 10 = 7
So 720657-98-7 is a valid CAS Registry Number.
720657-98-7Relevant academic research and scientific papers
Intramolecular addition reactions of functionalized arylcarbenes to double bonds
Kirmse, Wolfgang,H?mberger, Günter
, p. 3925 - 3934 (2007/10/02)
Arylcarbenes with unsaturated ortho substituents (vinyloxy, 1-propenyloxy, allyl, 2-butenyl, 2,4-pentadienyl) were generated in methanol by photolysis of diazo precursors. Intermolecular OH insertion was found to compete with intramolecular addition to th
