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Browsing Issue 05 by Title

Browsing Issue 05 by Title

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  • Bioassay Directed Isolation Studies on Solanum surrattense 
    EJAZ AHMED; AHSAN SHARIF; HAQ NAWAZ; MUKHTAR-UL-HASSAN; MUHAMMAD AZAM RASOOL; KHADIJA NAFEESA; ROBINA BEGUM; MUHAMMAD ASHRAF; TARIQ MAHMUD (Karachi: The Chemical Society Of Pakistan, 2011-10-13)
    Bioassay directed isolation studies on solanum surrattense have resulted in the isolation of three steroidal alkaloids namely, acetyl-solasodine (1), khasianine (2) and solamargine (3) from the ethyl acetate soluble fraction. ...
  • Chemical Composition and the Regional Effect of Vitex negundo Linn. var. cannabifolia (Sieb.et Zucc.) Hand.-Mazz. Essential oils and the Regional Effect on it 
    YING TANG; GANG CHEN; JIE ZHANG; SHU-ZHEN MU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-24)
    The chemical constituents of the essential oil of Vitex negundo Linn. var. cannabifolia (Sieb.et Zucc.) Hand.-Mazz. in Zhangjiazhai Mount, Yimeng Mountain Area, North China were analyzed by GC-MS. Fifty seven components ...
  • Comparative Synthetic Study of 1,4-Dihydroxy Anthraquinone (Quinizarin) Dye Intermediate 
    KHALID PERVEZ BHATTI; MUHAMMAD ZUBER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-27)
    1,4-Dihydroxy anthraquinone (quinizarin) has been synthesised with two different precursors’ p-chlorophenol and hydroquinone by condensation of phthalic anhydride. It has been noticed that p-chlorophenol gave higher yield ...
  • Comparing Heavy Metals Accumulation Potential in Natural Vegetation and Soil Adjoining Wastewater Canal 
    NAUREEN AURANGZEB; MUHAMMAD IRSHAD; FURRUKH HUSSAIN; QAISAR MAHMOOD (Karachi: The Chemical Society Of Pakistan, 2011-10-09)
    Heavy metal (HM) pollution of waters, soils and vegetation is a major ecological problem that needs to be investigated. The present study involved the collection of soil samples and natural vegetations (Tribilas terristris, ...
  • A Cystein Protease from Asteraceae (Centaurea Aegialophila) 
    NAZAN DEMİR; HAYRUNNISA NADAROĞLU; MUHARREM TOPAL; YAŞAR DEMİR (Karachi: The Chemical Society Of Pakistan, 2011-10-19)
    Proteases are enzymes that perform very important functions in organisms and are used for a variety of objectives in vitro. In recent years, proteases have been used for clinical, pharmaceutical (alimentary digestion, ...
  • Effect of Fluorozis on the Erythrocyte Antioxidant Enzyme Activity Levels 
    MEHMET AKDOGAN; DUDU YILMAZ; MUSTAFA YONTEM; SULEYMAN KALELI; IBRAHIM KILIC (Karachi: The Chemical Society Of Pakistan, 2011-10-06)
    While the flourine level of (drinking) water was higher than normal ranges in the center of Isparta region before 1995 year, this problematic situation is solved in later years. (However) the individuals who are staying ...
  • Ethyl Chloroformate as Derivatizing Reagent for Gas Chromatographic Determination of α-Keto acids and Amino acids from Pharmaceutical Preparation 
    KULSOOM UBEDULLAH ABBASI; MUHAMMAD YAR KHUHAWAR; MUHAMMAD IQBAL BHAMGER; KHALIDA PARVEEN MAHAR; ABDUL HAMEED CHANNAR (Karachi: The Chemical Society Of Pakistan, 2011-10-30)
    α-keto acids pyruvic acid (PYR), 2-ketobutyric acid (KBA), 3-methyl-2-oxobutyric acid (MKBA), 3- methyl-2-oxovalaric acid M3KVA), 4- methyl-2-oxovalaric acid (M4KVA), 2- ketohexanoic acid (KHA) and phenylpyruvic acid (PPYR) ...
  • Improved Synthesis of Ferrocenyl aniline 
    ATAF ALI ALTAF; NASIR KHAN; AMIN BADSHAH; BHAJAN LAL; SHAFIQULLAH; SAEED ANWAR; MUHAMMAD SUBHAN (Karachi: The Chemical Society Of Pakistan, 2011-10-15)
    Comparative synthesis of ferrocenyl aniline from nitro phenyl ferrocene using different reducing agents, like Sn/HCl, Zn/HCl, Pd-charcoal/NH₂-NH₂ and Zn/formic acid, has been studied and found that Zn/formic acid system ...
  • The investigation of the Anti-hypercholesterolemic Activities of Thymbra Spicata Labiata Oil (Karabas Thyme Oil) and Atorvastatin 
    HILAL DEMIRALAY; MEHMET. AKDOGAN; METIN CIRIS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-23)
    The leaves of TSL (Thymbra Spicata Labiatae), which include plant sterols and stanols, are used in the treatment of hypercholesterolemia, which is a highly prevalent health problem. This study aimed to determine the ...
  • Microbial Transformation of Vanillin Isolated from Melia azedarach to Vanillyl Alcohol followed by Protease Inhibition and Antioxidant Activity 
    DURRE SHAHWAR; MUHAMMAD ASAM RAZA; TOQIR ALI; VIQAR UDDIN AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-20)
    Vanillin (1) was isolated from ethanolic extract of Melia azedarach L. and incubated in the culture of Aspergillus niger GC-4, which resulted in vanillyl alcohol (2). The product was identified by mass, ¹H and ¹³C-NMR ...
  • Microwave Assisted Synthesis of Triphenodioxazines: A Novel and Convenient Approach 
    MUHAMMAD NAJEEBULLAH; MUNAWAR ALI MUNAWAR; AMRAN WAHEED; AHSAN SHARIF; EJAZ AHMED (Karachi: The Chemical Society Of Pakistan, 2011-10-11)
    A novel and economical method for the synthesis of triphenodioxazines is described. The method involves the oxidative cyclisation of the intermediates 2,5-bis-(arylamino)-3,6- dichlorocyclohexa-2,5-diene-1,4-dione in 95-97% ...
  • Modeling of Cd(II) Sorption on Mixed Oxide 
    MUHAMMAD WASEEM; SYED MUSTAFA; ABDUL NAEEM; KHIZAR HUSSAIN SHAH; SAMAD YAR HUSSAIN; MUHAMMAD SAFDAR (Karachi: The Chemical Society Of Pakistan, 2011-10-02)
    Mixed oxide of iron and silicon (0.75M Fe(OH)₃:0.25M SiO₂) was synthesized and characterized by various techniques like surface area analysis, point of zero charge (PZC), energy dispersive X-rays (EDX) spectroscopy, ...
  • Optimal Method for Preparation of Magnetite Nanoparticles 
    UMAR SAEED KHAN; NAZIR SHAH KHATTAK; AMINUR RAHMAN; FARIDULLAH KHAN (Karachi: The Chemical Society Of Pakistan, 2011-10-03)
    This paper deals with the synthesis and characterization of magnetite nanoparticles via the controlled modified chemical coprecipitation method using ferrous and ferric salt solution in alkaline medium with out any surfactant ...
  • Phytochemical and Antimicrobial Studies of Grewia tenax 
    EJAZ AHMED; AHSAN SHARIF; SABBIR HUSSAIN; ABDUL MALIK; MUKHTAR-UL-HASSAN; MUNAWAR ALI MUNAWAR; SAEED AHMAD NAGRA; JAMIL ANWAR; MUHAMMAD ASHRAF; NIGHAT AFZA; MAKSHOOF ATHAR (Karachi: The Chemical Society Of Pakistan, 2011-10-12)
    For the first time eleven compounds have been isolated from the ethyl acetate soluble fraction of whole plant of Grewia tenax namely, β-sitosterol (1), β-sitosteryl acetate (2), β-amyrin (3), β-amyrin acetate (4), ...
  • Phytochemicals from Ipomoea carnea collected from Murree Hills 
    MUHAMMAD SALEEM; MUHAMMAD IMRAN TOUSEEF; NAHEED RIAZ; MARIA HAFEEZ; SHABIR AHMED; ABDUL JABBAR; MUHAMMAD FARRUKH NISAR; SAEED AHMAD; IRSHAD AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-25)
    pomoea carnea has been identified as a medicinal shrub and produces a variety of secondary metabolites. Present study deals with the isolation and identification of a naturally occurring new compound, dodecyl-p-coumarate ...
  • Potentiometric Titrations of Para and Nitro Substituted Aromatic Acids and their Mixtures in Methylethylketone 
    CEMAL ÖZEROĞLU; MESUT KARAHAN (Karachi: The Chemical Society Of Pakistan, 2011-10-08)
    In this study, it was the purpose to examine the potentiometric titrations of para and nitro substituted aromatic acids in methylethylketone (MEK) as a non-aqueous solvent. Good analytical results were obtained in determining ...
  • Preparation of Ethylcellulose Latex by Aqueous Dispersions: Importance of the Particle Size and Plasticizer 
    MAHMOOD IQBAL; CHENGZHI CHUAI; KALSOOM MAHMOOD; YAN HUANG; HUI LIU; MUHAMMAD AIJAZ (Karachi: The Chemical Society Of Pakistan, 2011-10-04)
    Based on phase transfer processes ethylcellulose (EC) latex was prepared using dibutyl sebacate (DBS) as plasticizer and oleic acid, ammonia water as an emulsifier to evaluate film-formation properties. Atomic force ...
  • Removal of Toxic Dichlorophenol from Water by Sorption with Chemically Activated Carbon of Almond Shells – A Green Approach 
    NADIA JAMIL; NAVEED AHSAN; MUNAWAR ALI MUNAWAR; JAMIL ANWAR; UMER SHAFIQUE (Karachi: The Chemical Society Of Pakistan, 2011-10-05)
    Chlorophenols (CP) represents a group of organic compounds having substituted chlorines attached to phenol ring. These trace organic pollutants represent a major environmental concern, because of toxicity, non-biodegradability, ...
  • Secondary Metabolites from Caragana ambigua 
    MAJIDA; REHAN KHAN; ITRAT FATIMA; AMAN KARIM; ABDUL MALIK; RASOOL BAKHSH TAREEN (Karachi: The Chemical Society Of Pakistan, 2011-10-18)
    A new naturally occurring pregnane derivative named as ambiguanol (1) has been isolated from ethyl acetate soluble sub-fraction of the ethanolic extract of Caragana ambigua along with E-cinnamic acid (2), β-sitosterol ...
  • Studies of Antifungal Activity of Forsskalea tenacissima 
    MUHAMMAD QAISAR; VIQAR UDDIN AHMAD; MOHAMMAD NISAR; SYED NAEEMUDDIN GILANI; SAMREEN PERVEZ (Karachi: The Chemical Society Of Pakistan, 2011-10-14)
    Antifungal activity of different extracts from Forsskalea tenacissima prepared by solvent-solvent extraction and vacuum liquid chromatography (VLC) was determined. Extracts were found to be active against Candida albicans, ...

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