A Review: Current Analytical Methods for Determination of Atopine Sulphate in Pharmaceutical dosage forms Hiral M. Pokiya1*, Priyanka S. Malani1, Bhumi K. Patel1, Dr. Hasumati A. Raj1, Dr. Vinit C. Jain1 1 Shree Dhanvantary Pharmacy College,Kim, Surat, Gujarat Address For correspondence: Department of Quality Assurance Shree Dhanvantary Pharmacy College At : Kim, Taluka : Olpad, Dist: Surat, Pin code : 394110 Mobile No: 8866109499 *Email: pokiyahiral@yahoo.in Number of figures: 1 Number of tables: 3 ABSTRACT: Atropine is an anticholinergic or parasympatholytic drug. It inhibits the muscarinic actions of acetylcholine. Which is available in the different pharmaceutical dosage forms through various routes of administration, such as oral, ophthalmic and systemic. It is used to produce mydriasis and cycloplegic effect. This article reviews from different journals in which developed analytical methods for identification and quantitative determination of Atropine as a single or combination with other drugs in bulk and pharmaceutical dosage form. The most commonly used methods for the determination of Atropine presented in this article are chromatographic methods: HPLC,RP-UPLC,UV spectrophotometric methods were reported. KEY WORD:-Atropine Sulphate, Chromatographic method, UV spectroscopic method 1) INTRODUCTION: Atropine Sulphate[Bis[(1R,3R,5S)-8-methyl-8-azabicyclo[3.2.1]oct-3-yl (2RS)-3-hydroxy-2phenylpropanoate]sulphate] is appears as a White Crystalline Powder (Figure 1)(1).Atropine is a naturally occuring tropen alkaloid and basic in nature. It is obtained from Atropa belladonna and Solanaceous family(2). It is Very soluble in water, freely soluble in methanol and ethanol(3) Atropine Sulphate has pKa values is 9.9(4) and melt at Not lower than 187°C(5) Figure 1: Chemical structures of Atropine Sulphate(1) Atropine is an anti-muscarinic agents or parasympatholytic drug. It is act on muscarinic receptor and inhibit the action of acetylcholine. This results in dilation of the pupil (mydriasis) and unresponsive to light. Another effect is relaxation of ciliary muscle causes paralysis of accomodation (cycloplegia) and near vision is impaired(6) 2) METHODS FOR THE DETERMINATION OF DEXAMETHASONE SODIUM PHOSPHATE a) Compendial Method: Atropine Sulphate is official in Indian pharmacopoeia, British Pharmacopoeia, United State Pharmacopoeia and European Pharmacopoeia and estimation is done by potentiometric titration(table-1) Table-1 Official compendial methods for assay of Atropine Sulphate INDIAN PHARMACOPOEIA(1) 1) Method Potentiometric titration Procedure Weigh drug and dissolve in anhydrous glacial acetic acid.Titrate with 0.1 M perchloric acid. Factor :- 1 ml of 0.1 M perchloric acid is equivalent to 0.06768 g of Atropine sulphate. BRITISH PHARMACOPOEIA(3) 2) Method 3) Potentiometric titration Procedure Weigh drug and dissolve in anhydrous glacial acetic acid.Titrate with 0.1 M perchloric acid. Factor :- 1 ml of 0.1 M perchloric acid is equivalent to 0.06768 g of Atropine sulphate UNITED STATES PHARMACOPOEIA(5) Method Potentiometric titration Procedure Weigh drug and dissolve in anhydrous glacial acetic acid.Titrate with 0.1 M perchloric acid. Factor :- 1 ml of 0.1 M perchloric acid is equivalent to 0.06768 g of Atropine sulphate. EUROPEAN PHARMACOPOEIA(7) 4) Method Potentiometric titration Procedure Weigh drug and dissolve in anhydrous glacial acetic acid.Titrate with 0.1 M perchloric acid. Factor :- 1 ml of 0.1 M perchloric acid is equivalent to 0.06768 g of Atropine sulphate. b) Spectrophotometric Method: Table-2 Developed spectroscopic method for Atropine Sulphate Sr. Title No. 1. The Use of the First-derivative Curves of Absorption Spectra in Quantitative Analysis 2. Spectrophotometric Determination of Atropine Sulfate in Eye Drops using Bromthymol Blue 3. Colorimetric Determination of Atropine, Homatropine, Scopolamine, and their Derivatives by the Ferric Hydroxamate Method Abstract Ref. No. The first-derivative curves of Uv-Visible spectra 8 (ΔE/δλ ) are useful in quantitative analysis. A base-line technique and its algebraic version are reported for (i) the correction of quadratic irrelevant absorption, and (ii) the determination of a substance in the presence of another with overlapping spectra. The method is illustrated by the determination of atropine sulphate in the presence of phenyl-mercury(ii) nitrate. The results obtained suggest that the method warrants careful study over a wide field of applications. Content of atropine in eye drops of atropine sulfate 9 were determined colorimetrically and spectrophotometricaly using methods of ion pairs with bromtimolblue. The described method is more convenient for routine analysis then non aqueous titration described in various Pharmacopoeias. The purpose of this study was to develop a 10 procedure for the quantitative analysis of the salts of the solanaceous alkaloids in the presence of their hydrolysis products. The salts taken were atropine sulfate, homatropine hydrobromide, homatropine methyl-bromide, scopolamine hydrobromide, and scopolamine methyl-bromide. The ferric hydroxamate procedure was used. The conditions necessary for a reproducible reaction were established; a procedure of sufficient sensitivity was developed which will allow unit dose analysis; and an analysis was developed which will permit the salts of the solanaceous alkaloids to be quantitatively analyzed in the presence of their degradation products. c) Chromatographic method Table-3 Developed Chromatographic method for Atropine Sulphate Sr.No. Title Mobile phase 1. Water: Acetonitrile: Tetrahydrofuran (67:30:3, v/v/v) containing 1 mM perchloric acid Methanol:5 mmol 264 nm Potassium dihydrogen Phosphate buffer (50: 50, v/v) 2. 3. 4. 5. 6. 7. 8. High Performance Liquid Chromatographic Determination of Atropine and Atropine like Alkaloids in Pharmaceutical Preparations with Indirect Conductometric Detection RP-HPLC Method Development for Estimation of Atropine Sulphate in Bulk Impurity Profiling of Atropine Sulfate by Microemulsion Electrokinetic Chromatography Development and Validation of Novel RP- Phosphate buffer : UPLC Method for Estimation of Atropine Acetonitrile (87:13, Sulphate in Pharmaceutical Dosage Form v/v)pH was adjusted to 3.5 by ortho phosphoric acid Simultaneously Determination of Atropine CH3 CN-0.1% Sulphate, Diphenhydramine Hydrochloride, H3PO4 Capsaicin and Dihydrocapsaicin in Painrelieving Plaster for Arthritis by RP-HPLC LC Determination of Atropine Sulfate and Methanol : Water : Scopolamine Hydrobromide in Formic acid Pharmaceuticals (165:35:1) and pH adjusted 8.3 with triethylamine Determination of Atropine and Obidoxime in Automatic Injection Devices Used as Antidotes Against Nerve Agent Intoxication Determination of Atropine Sulphate and acetonitrile-diluted Benzalkonium Chloride in Eye Drops by acetic acid (80:20, HPLC v/v) Wavele ngth Ref.No. 11 12 13 210 nm 14 280 nm 15 230nm 16 17 - 260 nm 18 3) DISCUSSION The presented review highlights on various analytical methods published on Atropine Sulphate and combination with other drug. HPLC-UV methods were found to be most sensitive for Atropine Sulphate. Various chromatographic conditions are presented in under Table 3. The HPLC method could be automated; there are different column fillings; different solvents with different polarity as mobile phases and different detection modes. The faster time, high sensitivity, specificity and better separation efficiency enable HPLC to be used frequently for the simultaneous qualitative and quantitative determination of Atropine Sulphate in the comparison with the other methods. There is no doubt on the fact that these chromatographic methods are rapid and far more economical .In this way various analytical methods for the estimation of these Atropine Sulphate in bulk or in various matrixes like plasma, alone or in combination with other drugs is discussed. The presented information is useful for the researchers especially those involved in the formulation development and quality control of Atropine Sulphate and combination with other drug. 4) REFERENCES: 1) Indian Pharmacopoeia, The Indian Pharmacopoeia Commission Ghaziabad, Govt. of India Ministry of Health and Family Welfare,vol.II:852-853,2010. 2) Rang HP, Dale MM, Ritter JM, Flower RJ, “Rang and Dale’s Pharmacology”,6 th edition, Edinburgh:Churchill Livingstone,153-154, 2008. 3) British Pharmacopoeia, The Department of Health, London: The 193-195, 2010. Stationary Office,vol.I: 4) Moffat AC, et al., “Clarke’s Isolation and Identification of Drugs”, 2nd edition, The Pharmaceutical Press ,London - GB, 363-364,1986. 5) The United States Pharmacopoeia (USP 32 NF 27) Asian Edition, Rockville, MD:USP Convention Inc.,vol.II:1604, 2009. 6) Tripathi KD, “Essentials of Medical Medical Publishers (P) Ltd;106-110, 2008. 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