74756-58-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74756-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,7,5 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74756-58:
(7*7)+(6*4)+(5*7)+(4*5)+(3*6)+(2*5)+(1*8)=164
164 % 10 = 4
So 74756-58-4 is a valid CAS Registry Number.
74756-58-4Relevant academic research and scientific papers
Azolides, 7. - Phosphonate and Phosphate Group Transfer with Pyrazolides
Regitz, Manfred,Martin, Roland
, p. 1641 - 1652 (2007/10/02)
The tert-butylammonium α-diazophosphinates 7 add onto acceptor-substituted acetylenes 8 with formation of N-phosphorylpyrazoles: Primarily formed 3H-pyrazoles 9 undergo spontaneous sigmatropic shift of the anionic PO-group to yield 10. α-Diazophosph
