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131458-55-4

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131458-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131458-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,4,5 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131458-55:
(8*1)+(7*3)+(6*1)+(5*4)+(4*5)+(3*8)+(2*5)+(1*5)=114
114 % 10 = 4
So 131458-55-4 is a valid CAS Registry Number.

131458-55-4Relevant articles and documents

Cross-coupling of aryl iodides with paramagnetic terminal acetylenes derived from 4,4,5,5-tetramethyl-2-imidazoline-2-oxyl 3-oxide

Klyatskaya, S. V.,Tretyakov, E. V.,Vasilevsky, S. F.

, p. 128 - 134 (2007/10/03)

2-(Arylylethynylphenyl)-4,4,5,5-tetramethyl-2-imidazoline-1-oxyl 3-oxides 12 and 13 were synthesized by cross-coupling of aryl iodides with 1-alkynes containing the 4,4,5,5-tetramethyl-2-imidazoline-1-oxyl 3-oxide fragment. A procedure was developed for the preparation of 3-and 4-ethynyibenzaldehydes with the use of 2-methylbut-3-yn-2-ol.

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