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133828-60-1

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133828-60-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133828-60-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,2 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133828-60:
(8*1)+(7*3)+(6*3)+(5*8)+(4*2)+(3*8)+(2*6)+(1*0)=131
131 % 10 = 1
So 133828-60-1 is a valid CAS Registry Number.

133828-60-1Downstream Products

133828-60-1Relevant articles and documents

Syntheses of Angular Condensed Ring Systems Combining a Benzodiazepinic, or Benzothiazepinic, and a Coumarinic Moiety

Djudjic, R.,Trkovnik, M.

, p. 77 - 82 (1991)

The title compounds were prepared via intermediates resulting from reactions of 3-formyl-4-hydroxycoumarin (1) with o-phenylenediamine, o-aminophenol and o-aminothiophenol, respectively.Intramolecular ring closures were effected between the free hydroxy and amino or thiol groups.

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