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67749-14-8

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67749-14-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67749-14-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,7,4 and 9 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 67749-14:
(7*6)+(6*7)+(5*7)+(4*4)+(3*9)+(2*1)+(1*4)=168
168 % 10 = 8
So 67749-14-8 is a valid CAS Registry Number.
InChI:InChI=1/C12H10N2O4S/c1-2-18-19(16,17)11-5-3-4-9-8(11)6-7-10(14-13)12(9)15/h3-7H,2H2,1H3

67749-14-8Downstream Products

67749-14-8Relevant articles and documents

Single Pot Process For The Preparation Of Diazonaphthoquinonesulfonyl Ester

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Page/Page column 8, (2008/06/13)

The present invention provides a single pot process for the preparation of diazonaphthoquinonesulfonyl ester, a useful organic material for micro electronic and dye industry. This study pertains to the one pot preparation of diazonaphthoquinonesulfonyl esters using the corresponding diazonaphthoquinine sulfonic acid or its sodium salt, diphosgene or triphosgene, variety of hydroxy compounds and tertiary organic base in an organic solvent medium.

Synthesis and Characterization of Substituted 2-Diazo-1-oxo-1,2-dihydronaphthalenes and Their Products of Photolysis and Thermolysis

Baumbach, B.,Bendig, J.,Nagel, T.,Dubsky, B.

, p. 625 - 635 (2007/10/02)

Several 2-diazo-1-oxo-1,2-dihydronaphthalenes (1, 2) have been synthesized by reaction of selected hydroxy compounds and 2-diazo-1-oxo-1,2-dihydronaphthalene-5- and -4-sulfonylchloride, respectively.Photolysis as well as thermolysis of 1 and 2 leads to final products, the nature of which depends on the position of substitution.So, reactions of 5-substituted derivatives (1) yield the corresponding indene-3-carboxylic acids 3 and their esters 5, respectively.In contrast, reactions of 4-substituted derivatives (2) lead to the formation of the 1-sulfo-indene-3-carboxylic acid derivatives 4 and 6.Prepared compounds have been characterized by means of mass, ultraviolet, infrared, 1H-n.m.r. and 13C-n.m.r. spectroscopy.

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