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4502-98-1

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4502-98-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4502-98-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,0 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4502-98:
(6*4)+(5*5)+(4*0)+(3*2)+(2*9)+(1*8)=81
81 % 10 = 1
So 4502-98-1 is a valid CAS Registry Number.

4502-98-1Relevant articles and documents

Copper(I)-catalyzed synthesis of substituted 2-mercapto benzimidazoles

Murru, Siva,Patel, Bhisma K.,Le Bras, Jean,Muzart, Jacques

experimental part, p. 2217 - 2220 (2009/07/01)

An efficient method for the preparation of various substituted 2-mercapto benzimidazoles from their corresponding thioureas has been developed. 5-Alkylation of thioureas followed by Cu-catalyzed intramolecular N-arylation furnished substituted 2-mercapto

Synthesis, structure, and tautomerism of formazans that contain 1-aryl-2-benzimidazolyl residues

Tyurenkova,Mudretsova,Mertsalov,Bednyagina

, p. 637 - 640 (2007/10/02)

1,5-Bis(1-aryl-2-benzimidazolyl)-3-methyl- and 1-(p-tolyl)-3-methyl-5-(1-aryl-2-benzimidazolyl)formazans were synthesized. It was shown by IR spectroscopy (from the change in the spectral characteristics of the NH, groups) that the formazans exist in the

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