Simulataneous determination of corticosteroids and parabens in ointments by HPLC.
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چکیده
منابع مشابه
HPLC Determination of Some frequently used Parabens in Sunscreens
Parabens are esters of p-hydroxybenzoic acid and belong to group of effective preservatives commonly used in cosmetic products, drugs and food. Their antimicrobial activity increases with increasing carbon number of the ester group. A number of cosmetic products and skincare products are preserved with parabens, as well in Europe as in the United States. Methyl, ethyl and propyl paraben are pre...
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چکیده هدف از این کار بررسی الکترواکسیداسیون کتکول و مشتقات آن در حضور 4-فنیل سمی کاربامازید بوده است اکسیداسیون کتکولها ترکیبات نا پایدار کینونها را تولید می کنند که این ترکیبات می تواند در واکنش مایکل بعنوان پذیرنده نوکلئوفیل عمل نمایند. در ادامه اکسایش کتکولهای (a-c1) را درحضور 4-فنیل سمی کاربامازید در محلول آب/استونیتریل (90/10)بوسیله ولتامتری چرخه ای و کولن متری در پتانسیل ثابت مورد بررسی ...
15 صفحه اولSpectrophotometric Determination of Corticosteroids and Its Application in Pharmaceutical Formulation
A simple, sensitive and economically viable spectrophotometric method for the determination of corticosteroids (predinsolone {PSL}, dexamethasone {DEX}, prednisone {PS}, betamethasone sodium phosphate {BEP} and hydrocortisone {HYD} has been developed. The method involves the oxidation of corticosteroids by iron (III) and subsequent complexation of iron (II) with potassium hexacynoferrate (III),...
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hydrochlorothiazide (hct) is a diuretic agent which is shown to be effective in the treatment of hypertension. literature reports have demonstrated that urinary excretion data may be used to assess the bioavailability of various formulations containing this thiazide. also hct consumption by the athletes is one of the drugs which should be regulated by world anti-doping agency (wada), because of...
Determination of Phenolic Compounds in Pinus eldarica by HPLC
Background: The antioxidant components have been identified in some pine species. Antioxidant properties of proantocyanidins reduce free radicals induced by DNA fragmentation and lipid proxidation and also proanthocyanidines could curb lipid peroxidation. Objective: In this study, we analyzed different parts of Pinus eldarica (bark, seed and needle) and assessed their antioxidant contents. ...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1988
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.37.12_648