INSTRUCTIONS TO AUTHORS

Please check following prior to submission of manuscript

Manuscript Organization:

• Short running title: not more than five words.
• Affiliation of all contributors.
• Corresponding author’s fax & phone numbers with e-mail address. (e-mail address will help us for fast correspondence to the authors)
• Summary: not more than 250 words.
• Keywords: not more than six words.
• The manuscript should include in sequence, Summary, Keywords, Introduction, Results and Discussion, Experimental, Acknowledgements (if applicable) and References, Tables and Figures (each on separate sheet). Figures, and Tables must not be placed in the main text of the manuscript.
• Authors should only use abbreviations sparingly and should always define an abbreviation when first used by placing it in parenthesis after the full term, eg., nuclear Overhuser effect (NOE), Butyrylcholinesterase (BChE), Heteronuclear multiple bond coherence (HMBC).
• The metric system for all measurements should be expressed in lower case letters without periods (ml, nm, min etc).
• Structures: CS Chem Draw (version 5.0 or later) will be used for the illustration of chemical structures. Drawing Setting: chain angle 120, bond spacing 18 % of length, fixed length 0.25 in, bold with 0.0347 in, line width 0.0111 in, margin width 0.0278 in, hash spacing 0.0417 in, font Arial and 10 in size.

 Text Specifications:

• MS word (office 2000 or later).
• Print: on Laser (not dot matrix) printer.
• Spacing: double.
• Margins: 2.5 cm (all four sides).
• Font style: Times New Roman.
• Font size: 10 for normal text; 10 (bold) for headings and 12 (bold) for title of the manuscript. Page size: A4
• References guideline:

1- Books:	V. U. Ahmad, S. Uddin, S. Perveen and A. Sultana, New Natural Products from Terresterial Plants and Marien Organism, in Atta-ur-Rahman (Ed.) Studies in Natural Products Chemistry Vol.9, Elsevier Science Publishers Amsterdam-New York(1991), p.51.
2- Journal:	A. B. Saleem, M. K. Ali and C. H. Khan, J. Nat. Prod., 57, 1422 (2000).
3- Patents:	N. Yamada, Nippon Shinyaku, Co., Ltd. Kyoto 6018550, Japan, (CI. C07C35/36), 4 Aug. 2005, Jp Appl. 2003/435, 677, 26 Dec. 2003; 40 pp ; C.A. 143 (11): 19381x
4- Theses:	E. Ahmed., Ph. D. Thesis, Phytochemical Investigation on Haloxylon recurvum, Silybum marianum and Aerva persica, University of Karachi, 2006.

Proofs: Authors are sent page proofs. To avoid delays in publication, proofs should be checked immediately for typographical errors and returned within 48 hours. Major changes are not acceptable at the proof stage. However if such changes are necessary, then a small charge may be made by the publishers.

Copyright: It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. By submitting a manuscript the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.

Reprints: 25 reprints free of cost will be provided for each paper. Extra reprints with or without covers may be ordered before the publication of journal.

Page Charges: US $ 10.00 per page will be levied from authors outside Pakistan.

Reviewing and promptness of publications: All papers submitted for publication will immediately be subjected to editorial scrutiny, usually in consultation with members of the Editorial Advisory Board. Every effort will be made to assess the papers quickly and the decision conveyed to the authors normally within 4 weeks of the receipt of the manuscript. The Papers will be typeset and the proofs dispatched to the authors normally within 4 weeks of their acceptance.

Published by The Chemical Society of Pakistan since 1978