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133053-89-1

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133053-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133053-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,0,5 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133053-89:
(8*1)+(7*3)+(6*3)+(5*0)+(4*5)+(3*3)+(2*8)+(1*9)=101
101 % 10 = 1
So 133053-89-1 is a valid CAS Registry Number.

133053-89-1Downstream Products

133053-89-1Relevant articles and documents

Synthesis of Indoles via Ring Closure of 2-Alkylnitroaniline Derivatives.

Bergman, Jan,Sand, Peter

, p. 6085 - 6112 (2007/10/02)

A variety of nitroindoles have been prepared from imidate, amidine, and sec-anilide derivatives of 2-alkyl-3- or 5-nitroanilines by a base-induced cyclization promoted by dialkyl oxalates.It is shown that essentially the same procedure also can be used to synthesize the corresponding nitroindole-3-glyoxylates in one simple operation.The synthetic potential is discussed and a mechanism is proposed.

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