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82721-89-9

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82721-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82721-89-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,7,2 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 82721-89:
(7*8)+(6*2)+(5*7)+(4*2)+(3*1)+(2*8)+(1*9)=139
139 % 10 = 9
So 82721-89-9 is a valid CAS Registry Number.

82721-89-9Downstream Products

82721-89-9Relevant articles and documents

A NEW GENERAL SYNTHESIS OF 2-(N-MONO- AND N-DI-SUBSTITUTED AMINO)THIAZOLES

Brown, Michael D.,Gillon, David W.,Meakins, G. Denis,Whitham, Gordon H.

, p. 1623 - 1626 (2007/10/02)

Although α-mercapto ketones react with cyanamides to give substituted 2-aminothiazoles the yields are satisfactory in only the simplest cases.However, a range of 2-aminothiazoles with substituents on the ring or the exo-nitrogen atom was obtained efficiently by the following one-pot procedure: a solution of an α-mercapto ketone anion was generated by treating an O-ethyl S-2-oxoethyl dithiocarbonate with piperidine at 20 deg C, a cyanamide was added, and the solution was heated for 3-6 h.

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