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23538-89-8

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23538-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23538-89-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,5,3 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23538-89:
(7*2)+(6*3)+(5*5)+(4*3)+(3*8)+(2*8)+(1*9)=118
118 % 10 = 8
So 23538-89-8 is a valid CAS Registry Number.

23538-89-8Relevant articles and documents

New N-substituted polyamines. Synthesis, characterization and crystal and molecular structure of 2-[{C6H4(CO)2NCH 2CH2}2NCH2]C6H 4Br

Coros, Maria,Domide, Dan,Vlassa, Mircea,Soran, Albert,Silvestru, Cristian

experimental part, p. 803 - 810 (2012/01/14)

New branched polyamines starting from diethylenetriamine, i.e. (Me 2NCH2CH2)2NCH2C 6H5 (9) and 2-[(Me2NCH2CH 2)2NCH2]C6H4X [X = Cl (10), Br (11)], were prepared by a multi-step procedure. Both the branched polyamines and the corresponding intermediates were characterized by multinuclear NMR spectroscopy in solution. The crystal and molecular structure of the intermediate 2-[{C6H4(CO)2NCH 2CH2}2NCH2]C6H 4Br (5) was established by single-crystal X-ray diffraction.

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