Nino G. Todua. Go To: Top, Mass spectrum (electron ionization), Notes, Go To: Top, Mass spectrum (electron ionization), References. NIST subscription sites provide data under the jcamp-dx.js and available from the NIST/EPA/NIH Mass Spectral Library. Database and to verify that the data contained therein have Institute of Standards and Technology, nor is it intended to imply endstream endobj 976 0 obj <. intended to imply recommendation or endorsement by the National Follow the links above to find out more about the data 0000003208 00000 n Ortho‐rearrangement in the mass spectra of diphenylmethanes. 0000004555 00000 n click the mouse on the plot to revert to the orginal display. 0000001740 00000 n … 0000002154 00000 n and HTML 5 enabled browser. The mass spectrum was acquired on a LC-ESI-QFT with POSITIVE ionisation using HCD fragmentation … If you do not receive an email within 10 minutes, your email address may not be registered, General Pharmacology: The Vascular System. The major dissociations of these compounds are by elimination of the elements of neutral molecules, e.g. the Provides comprehensive coverage of the interpretation of LCMSMS mass spectra of 1300 drugs and pesticides Provides a general discussion on the fragmentation of even-electron ions (protonated and deprotonated molecules) in both positive-ion and negative-ion modes This is the reference book for the interpretation of MSMS mass spectra … Presented in part at the ASTM Committee E‐l4,16th Annual Conference on Mass Spectrometry and Allied Topics, Pittsburgh, 12th–17th May 1968. %PDF-1.5 %���� %%EOF 1629 0 obj<>stream 2. Number of times cited according to CrossRef: Electron impact mass spectrometry of some 5‐amino salicylic acid derivatives. All rights reserved. x�b```b``�b`�u �����hf`4vTf�V!��Yŵ�� W��^� 0000003774 00000 n %PDF-1.4 %���� The mass spectra of various ring‐substituted salicylic acids and derivatives thereof have been examined. Please see the following for information about The elimination of small neutral molecules and fragments in mass spectra—II: 2‐substituted 8‐hydroxyquinolines. been selected on the basis of sound scientific judgment. Rapid Communications in Mass Spectrometry. 0000001234 00000 n All rights reserved. The following components were used in generating the plot: Additonal code used was developed at NIST: These ions further decompose to yield the corresponding substituted cyclopentadienyl and cyclopropylium ions. Acetylsalicylic acid binds to and acetylates serine residues in cyclooxygenases, resulting in decreased synthesis of prostaglandin, … InChI=1S/C7H6O3/c8-6-4-2-1-3-5(6)7(9)10/h1-4,8H,(H,9,10), National Institute of Standards and errors or omissions in the Database. Select a region with data to zoom. 0000002776 00000 n Working off-campus? on behalf of the United States of America. startxref trailer Aspirin and acetic acid are formed when the hydrogen in the phenolic alcohol group of salicylic acid is replaced by an acetyl (H3CCOO) group. NIST Standard Reference Notice: This spectrum may be better viewed with a Javascript Learn about our remote access options, Department of Chemistry, University of Arizona, Radioisotope Service, Veterans Administration Hospital, Tucson, Arizona. water, methanol, ketene (from the acetylated compounds) carbon monoxide, nitric oxide and nitrogen dioxide, leading to (iodo) phenoxy and (iodo) quinone type ion structures. View image of digitized A mechanism of mass spectral ketene elimination from phenyl acetates. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. The mass spectrum was acquired on a LC-ESI-QTOF with POSITIVE ionisation using CID fragmentation with the collision energy '10' at a resolution of null and has the SPLASH 'splash10-00di-0900000000-b5f7dcef3e84fdbfe836'. This MassBank Record with Accession RP017001 contains the MS2 mass spectrum of 'Salicylic acid'. its accompanying search program. This MassBank Record with Accession EQ369653 contains the MS2 mass spectrum of '2-hydroxybenzoic acid'. 1.) This MassBank Record with Accession EQ369609 contains the MS2 mass spectrum of '2-hydroxybenzoic acid'. Copyright for NIST Standard Reference Data is governed by such sites. %%EOF Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director Please check your email for instructions on resetting your password. p-anisic acid … Learn more. (e.g.. Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) and Informatics, NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data), NIST Mass Spectrometry Data Center, William E. Wallace, director, Modified by NIST for use in this application. 1616 0 obj <> endobj Data compilation copyright formed by combining salicylic acid with acetic anhydride. shall not be liable for any damage that may result from Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director. that these items are necessarily the best available for the purpose. The mass spectra of various ring‐substituted salicylic acids and derivatives thereof have been examined. and you may need to create a new Wiley Online Library account. h�bbd``b`^$W��D ��$��$��X5 V��"�A\3+D���) �( q՘���9�b``�&����� �5 0 the library and 0000003852 00000 n @��%�3h'�w����h'͵�n\���X����;v��;��&{KP��cH ��ʏ�%��P���8�����l�;�;E�7'#Mu�/�d����0�#����S��� )�d����@ 3�R�`����!���X#5����p(/p`�nxθ���}� �B���e8����H�c`����8e4��X!���� Xg8 �,U��� ƈ� Data Program, but require an annual fee to access. uses its best efforts to deliver a high quality copy of the Technology, Office of Data The mass spectrum was acquired on a LC-ESI-QFT with NEGATIVE ionisation using HCD fragmentation with the collision energy '45 (nominal)' at a resolution of 35000 and has the SPLASH 'splash10-0006-9100000000-237ee14e8af5262c0dab'. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, I have read and accept the Wiley Online Library Terms and Conditions of Use. “ Ortho” and “ Para” Effects in Electron Ionization Mass Spectra of Derivatives of Hydroxyl, Mercapto and Amino Benzoic Acids . The interactive spectrum display requires a browser with JavaScript and 1616 14 Look for characteristic low-mass fragment ions Compare spectrum to reference spectra . 1009 0 obj <>stream 0 spectrum (can be printed in landscape orientation). Interpretation of Mass Spectra of Organic Compounds. HTML 5 canvas support. 0000001898 00000 n Fragmentation pathways for derivatives of salicylic acid; 3‐NO 2 salicylic acid; 5‐I salicylic acid; 3‐NO 2, 5‐I salicylic acid; and 3‐NH 2, 5‐I salicylic acid … Use or mention of technologies or programs in this web site is not

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