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28586-90-5

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28586-90-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28586-90-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,5,8 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28586-90:
(7*2)+(6*8)+(5*5)+(4*8)+(3*6)+(2*9)+(1*0)=155
155 % 10 = 5
So 28586-90-5 is a valid CAS Registry Number.

28586-90-5Downstream Products

28586-90-5Relevant articles and documents

The Reaction of 2-Aminothiophene-3-carbonitriles with Heterocumulenes

Gewald, K.,Jeschke, T.,Gruner, M.

, p. 229 - 236 (2007/10/02)

The reaction of 2-aminothiophene-3-carbonitriles (1) with phenyl isothiocyanate does not yield the expected thienopyrimidine derivatives but the substituted dithienopyrimidopyrimid-7-thiones (4).The compounds 4 also may be synthesized from 1 and thiophosgene.Analogously, from 1 and phenyl isocyanate the substituted dithienopyrimidopyrimid-7-ones (9) arise in small yields.They are better obtainable from 1 and phosgene.Carbon disulphide reacts with 1 in pyridine to form a mixture of the thienopyrimid-2,4-dithione (10) and the condensed compound 4.The ratio of of products depends on the substituents in the 4,5-position of 1.The structures are investigated by n.m.r.-spectroscopy.

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