6191-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6191-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,9 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6191-91:
(6*6)+(5*1)+(4*9)+(3*1)+(2*9)+(1*1)=99
99 % 10 = 9
So 6191-91-9 is a valid CAS Registry Number.
6191-91-9Relevant academic research and scientific papers
CYCLOPROPANATION OF ALLENES WITH DIAZOMETHANE IN THE PRESENCE OF PALLADIUM(II) COMPOUNDS
Zefirov, N. S.,Lukin, K. A.,Timofeeva, A. Yu.
, p. 2246 - 2248 (2007/10/02)
The reaction of substituted allenes with diazomethane in the presence of palladium(II) compounds takes place at the less substituted double bond with the formation of the corresponding methylenecyclopropanes.