104845-92-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104845-92-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,8,4 and 5 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 104845-92:
(8*1)+(7*0)+(6*4)+(5*8)+(4*4)+(3*5)+(2*9)+(1*2)=123
123 % 10 = 3
So 104845-92-3 is a valid CAS Registry Number.
104845-92-3Relevant academic research and scientific papers
Elektronenreiche Olefine mit Pyran-4-yliden-Einheit
Krasuski, Witold,Regitz, Manfred
, p. 1179 - 1183 (2007/10/02)
Two methods have been applied for the synthesis of the hitherto unknown electron-rich olefins with a pyran-4-ylidene unit. 1) Pyrylium salts 6a-c were condensed in acetonitrile at 70 deg C with 2-piperidino-1,3-dithiols 5a,b to form 2-(pyran-4-ylidene)-1,
