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49673-38-3

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49673-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49673-38-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,7 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 49673-38:
(7*4)+(6*9)+(5*6)+(4*7)+(3*3)+(2*3)+(1*8)=163
163 % 10 = 3
So 49673-38-3 is a valid CAS Registry Number.

49673-38-3Relevant articles and documents

New α-diimine nickel complexes—Synthesis and catalysis of alkene oligomerization reactions

Rishina, Laura A.,Kissin, Yury V.,Lalayan, Svetlana S.,Gagieva, Svetlana C.,Kurmaev, Dmitri A.,Tuskaev, Vladislav A.,Bulychev, Boris M.

, p. 495 - 502 (2016/08/23)

Three α-diimine complexes of NiII of the general formula {2,3-bis[N,N-(aryl)imino]butane}NiBr2 with aryl groups 2,3,5,6-F4-C6H, 2-CF3-C6H4 and 2,4-(CH3)2-C6H3 were synthesized and used as catalyst precursors in oligomerization reactions of ethylene and propylene. Oligomerization catalysts were produced by activating the complexes with AlEt2Cl, Al2Et3Cl3, and with combinations of these compounds and PPh3. The catalysts convert ethylene into low molecular-weight materials (liquids and waxes) with oligomer chains containing 15–20?mol.% of methyl branches and 4–6?mol.% of ethyl branches, which are apparently produced in “chain-walking” reactions of active centers along oligomer chains. Oligomerization of propylene yields a variety of light products, mostly dimers, which are formed in primary and secondary insertion reactions of propylene into Ni–H and Ni–C bonds in active centers. Reaction schemes of oligomer formation are discussed.

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