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90172-65-9

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90172-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90172-65-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,7 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90172-65:
(7*9)+(6*0)+(5*1)+(4*7)+(3*2)+(2*6)+(1*5)=119
119 % 10 = 9
So 90172-65-9 is a valid CAS Registry Number.

90172-65-9Downstream Products

90172-65-9Relevant articles and documents

p-Fluorobenzoyl Chloride for Characterization of Active Hydrogen Functional Groups by Fluorine-19 Nuclear Magnetic Resonance Spectrometry

Spratt, M. P.,Dorn, H. C.

, p. 2038 - 2043 (2007/10/02)

The base-catalyzed reactions of p-fluorobenzoyl chloride provide a convenient method for (19)F NMR analysis of alcohols, phenols, carboxylic acids, amines, and thiols.The (19)F chemical shift and yield data for p-fluorobenzoyl derivatives for nearly 100 compounds are presented.The yield data for these p-fluorobenzoyl derivatives suggest a simple, and in many cases, quantitative method for introducing a fluorine tagging group.The (19)F chemical shifts indicate a wide chemical shift range (ca. 10 ppm) for a large number of compounds.Furthermore, most chemical classes (e.g., phenols, alcohols, etc.) have fairly well resolved chemical shift regions.

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