DOI: 10.21276/ajptr
Thu, 23 May 2019

Spectrophotometric Method for the Determination of Trace Level Formaldehyde in Rivastigmine Tartrate Drug Substance

Cherukuru Nagaraju1,2,*, Raja Gorla1, Uttam Kumar Ray1, K Nagasrinivas1,Sharma Hemant kumar 1, Siddaiah Vidavalur2

1. APL Research Centre-II (A Division of Aurobindo Pharma Ltd), Sangareddy (M), Medak Dist., Hyderabad – 502 329, Andhra Pradesh, India.

2. Department of Organic Chemistry & FDW, Andhra University, Visakhapatnam– 530 003, Andhra Pradesh, India.


To develop a fast and sensitive  UV spectrophotometric method for the quantitative estimation of Formaldehyde in Rivastigmine tartrate drug substances and validate as per ICH guidelines. The method was based upon the observation, that a characteristic colourresults upon addition of  solution of Pentane-2,4-dione , also known as acetylacetone . In acetic acid and ammonium acetate buffer condition, acetylacetone and formaldehyde react to form dimethyl pyridine. Dimethyl pyridine is slightly yellow and its absorption maximum in aqueous solution is λ 420 nmin Rivastigmine tartrate drug substance.The developed method resulted in Formaldehyde exhibiting linearity in the range 0.975 to 234 µg/g. The Intraday and interday precision is exemplified by relative standard deviation of 0.562 % and 0.757%. Percentage Mean recovery was found to be in the range of 98‐101%, during accuracy studies. The limit of detection (LOD) and limit of quantitiation (LOQ) were found to be 1.3 µg/g and 3.9 µg/g respectively.The present work was aimed to develop a visible spectrophotometric method, which is simple, sensitive, accurate and cost effective to evaluate the quality of the bulk drugs.

Keywords: UV Spectrophotometry, Formaldehyde, Rivastigmine Tartrate, Method development, Validation.

[PDF]   Viewed: 1537   Downloaded: 174
  • Call for paper

    American Journal of PharmTech Research (AJPTR) is a peer-reviewed, bimonthly official international journal allowing access to abstracts and full-text.



  • Email & SMS Alerts

    Email/SMS alert system is one of the key features and gives update information about the submitted manuscript.


  • Article Statastics

    American Journal of PharmTech Research (AJPTR) provides unique facility for authors to know popularity of articles on basis of numbers of PDF download and views. It will display in tabulated format.

  • Online Submission

    American Journal of PharmTech Research (AJPTR) is one of the International open access journal devoted to various disciplines in science and technology.


web counter
web counter