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181711-88-6

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181711-88-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181711-88-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,7,1 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 181711-88:
(8*1)+(7*8)+(6*1)+(5*7)+(4*1)+(3*1)+(2*8)+(1*8)=136
136 % 10 = 6
So 181711-88-6 is a valid CAS Registry Number.

181711-88-6Relevant articles and documents

Pentadecamer 2,5-dipropoxy-1,4-phenlenevinylene

Meier, Herbert,Ickenroth, Dirk

, p. 1745 - 1749 (2007/10/03)

The conjugated, all-(E)-configured pentadecamer 2,5-dipropoxy-1,4-phenylenevinylene 1j was prepared by a multistep synthesis on the basis of hydroquinone. The procedure consists of a general method for the repetitive extension of oligo(phenylenvinylene) chains by two styryl units (7a 10 12 14). The relatively rigid oligomer 1j represents a molecular wire of about 100 A. The absorption of 1j provides a proof for the convergence theory for electronic properties of conjugated oligomers with increasing number of repeat units. The corresponding conjugated polymer lp with the same substitution matches the values which were extrapolated from the oligomer series 1a-1j. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.

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