139488-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139488-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,8 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139488-34:
(8*1)+(7*3)+(6*9)+(5*4)+(4*8)+(3*8)+(2*3)+(1*4)=169
169 % 10 = 9
So 139488-34-9 is a valid CAS Registry Number.
139488-34-9Relevant academic research and scientific papers
Synthesis of Allenylketenimines via Titanocene Vinylidene Complexes
Dennehy, Robert D.,Whitby, Richard J.
, p. 35 - 36 (2007/10/02)
The intermolecular addition of in situ generated titanocene vinylidene complexes to alkynes gives titanacyclobutenes which undergo an insertion-rearrangement with tert-butyl isocyanide to afford allenylketenimines in high yield.
