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1257341-81-3

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1257341-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257341-81-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,3,4 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1257341-81:
(9*1)+(8*2)+(7*5)+(6*7)+(5*3)+(4*4)+(3*1)+(2*8)+(1*1)=153
153 % 10 = 3
So 1257341-81-3 is a valid CAS Registry Number.

1257341-81-3Downstream Products

1257341-81-3Relevant articles and documents

Elaborating boron dipyrromethene dyes with conjugated polyaromatic frameworks

Ziessel, Raymond,Bura, Thomas,Olivier, Jean-Hubert

scheme or table, p. 2304 - 2310 (2010/11/17)

New difluoro-bora-diaza-s-indacenes were synthesized from tetramethyl derivatives following a sequence of reactions including Knoevenagel condensation, selective cross-coupling reactions in order to extend the delocalization pathway. The introduction of flexible chains bearing a terminal ester or based on polyethylene glycol insure a good solubility and import polarity which facilitates the purification procedures. Many polyaromatic subunits (pyrene, perylene, anthracene, naphtalene, ferrocene) were fused to the main central core of the Bodipy. Georg Thieme Verlag Stuttgart - New York.

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