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128945-03-9

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128945-03-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128945-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,4 and 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128945-03:
(8*1)+(7*2)+(6*8)+(5*9)+(4*4)+(3*5)+(2*0)+(1*3)=149
149 % 10 = 9
So 128945-03-9 is a valid CAS Registry Number.

128945-03-9Downstream Products

128945-03-9Relevant articles and documents

On the Reaction of Oxalic Amidines with Carbonic Acid Derived Heterocumulenes to Imidazolidine-Derivatives

Beckert, R.,Gruner, M.

, p. 65 - 82 (2007/10/02)

A useful synthetic route to nonsymmetric derivatives of imidazolidine (derivatives of parabanic acid) is demonstrated by the reaction of tetraarylated oxalic amidines 1 with different alkyl- and aryl substituted isothiocyanates 4, isoselenocyanates 31, and carbodiimides 30.Acylisothiocyanates 9 react differently leading to a mixture of three cycloacylation products 12, 13 and 14.Silylated heterocumulenes such as 25 and 26 react with 1 to give 28 and 29 transsilylation.Based on the 13C-n.m.r. spectroscopic investigation of the reaction between 1a and methyl isothiocyanate and phenyl isothiocyanate respectively a mechanism is proposed.

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