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20941-30-4

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20941-30-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20941-30-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,4 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20941-30:
(7*2)+(6*0)+(5*9)+(4*4)+(3*1)+(2*3)+(1*0)=84
84 % 10 = 4
So 20941-30-4 is a valid CAS Registry Number.

20941-30-4Downstream Products

20941-30-4Relevant articles and documents

Nickel(0) induzierte und katalysierte CC-Verknuepfungen von Styrol mit α, ο-Diisocyanaten

Hoberg, Heinz,Hernandez, Elisa,Guhl, Dieter

, p. 213 - 222 (1988)

The reaction of 1,6-Hexamethylenediisocyanate with styrene at the (lig)Ni0 system (lig=TCP) is dependent on the molar ratio to either the mono- or the bisazanickela 5-rings.Under certain conditions the normally stoichiometric reaction changes into one which is catalytic.In a regioselective C-C coupling reaction N,N'-(hexanediyl)biscinnamic amide is formed after about 7 catalytic cycles.Spectroscopic and chemical methods were used to identify the structures.Some special features of the C-C coupling reactions and the mechanism of the catalysis are described.

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