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81418-77-1

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81418-77-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81418-77-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,1 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81418-77:
(7*8)+(6*1)+(5*4)+(4*1)+(3*8)+(2*7)+(1*7)=131
131 % 10 = 1
So 81418-77-1 is a valid CAS Registry Number.

81418-77-1Downstream Products

81418-77-1Relevant articles and documents

THERMOTROPIC LIQUID CRYSTAL BEHAVIOR IN SOME AROMATIC ESTERAMIDES.

Kalyvas,McIntyre

, p. 105 - 118 (2007/10/02)

Ester-amide analogs of p-phenylene di-p-substituted benzoates have been synthesized and the thermotropic liquid crystal properties of the two series are compared. The crystalline, smectic, and nematic phases are all more thermally stable in the ester-amides than in the diesters. In the corresponding series of 4-alkoxybenzoyl compounds, as the alkyl chain length increases the difference in nematic phase stability also increases, but the difference in smectic phase stability decreases. Introduction of a methyl substituent into the central ring reduces the stability of all three phases, and increases the sensitivity of smectic phase stability, but not of crystalline or nematic phase stability, to alkyl chain length.

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