188307-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188307-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,3,0 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 188307-77:
(8*1)+(7*8)+(6*8)+(5*3)+(4*0)+(3*7)+(2*7)+(1*7)=169
169 % 10 = 9
So 188307-77-9 is a valid CAS Registry Number.
188307-77-9Relevant academic research and scientific papers
Stabilized and persistent allenylketenes
Huang, Wenwei,Fang, Decai,Temple, Karen,Tidwell, Thomas T.
, p. 2832 - 2838 (2007/10/03)
Photolyses of 2,3-bis(trimethylsilyl)-substituted methylenecyclobutenones 22-26 give essentially quantitative conversion to the allenylketenes 28-32 which have been isolated as long-lived species at room temperature. As predicted by molecular orbital calc
