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128552-92-1

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128552-92-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128552-92-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,5 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128552-92:
(8*1)+(7*2)+(6*8)+(5*5)+(4*5)+(3*2)+(2*9)+(1*2)=141
141 % 10 = 1
So 128552-92-1 is a valid CAS Registry Number.

128552-92-1Relevant articles and documents

Synthesis of N-(2H-thiadiazolothiazolopyridin-2-ylidene)aroylamines

Sambaiah, T.,Reddy, K.Kondal

, p. 355 - 364 (2007/10/02)

The reaction of 2-aminothiazolo pyridines (1) with aroyl isothiocyanates in acetone gave N-aroyl-N'-(thiazolo pyridin-2-yl)thioureas (2).Cyclisation of 2 in the presence of PCl5 in POCl3, as well as by oxidising agents like Br2 in CHCl3, Br2 in AcOH and lead tetraacetate yielded N-(2H- thiadiazolo thiazolo pyridin-2-ylidene)aroylamines (4).

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