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  1. Prasad B, Singh S. Bioanalysis young investigator: Bhagwat Prasad. Bioanalysis2011 Jun;3(12):1319-21doi: 10.4155/bio.11.123. PubMed PMID: 21679025.

  2. Garg A, Prasad B, Takwani H, Jain M, Jain R, Singh S. Evidence of the formation of direct covalent adducts of primaquine, 2-tert-butylprimaquine (NP-96) and monohydroxy metabolite of NP-96 with glutathione and N-acetylcysteine. J Chromatogr B Analyt Technol Biomed Life Sci2011 Jan 1;879(1):1-7doi: 10.1016/j.jchromb.2010.10.029. Epub 2010 Nov 4. PubMed PMID: 21112258.

  3. Prasad B, Garg A, Takwani H, Singh S. Metabolite identification by liquid chromatography-mass spectrometry. Trends in Analytical Chemistry. 2011; 30:360-387doi: 10.1016/j.trac.2010.10.014.


  1. Prasad B, Singh S. Identification of rat urinary metabolites of rifabutin using LC-MSn and LC-HR-MS. Eur J Pharm Sci2010 Sep 11;41(1):173-88doi: 10.1016/j.ejps.2010.06.006. Epub 2010 Jun 15. PubMed PMID: 20558285.

  2. Savaliya AA, Shah RP, Prasad B, Singh S. Screening of Indian aphrodisiac ayurvedic/herbal healthcare products for adulteration with sildenafil, tadalafil and/or vardenafil using LC/PDA and extracted ion LC-MS/TOF. J Pharm Biomed Anal2010 Jul 8;52(3):406-9doi: 10.1016/j.jpba.2009.05.021. Epub 2009 May 28. PubMed PMID: 19540696.

  3. Raijada DK, Prasad B, Paudel A, Shah RP, Singh S. Characterization of degradation products of amorphous and polymorphic forms of clopidogrel bisulphate under solid state stress conditions. J Pharm Biomed Anal2010 Jul 8;52(3):332-44doi: 10.1016/j.jpba.2009.05.001. Epub 2009 May 12. PubMed PMID: 19520540.

  4. Mayatra SJ, Prasad B, Jain M, Jain R, Singh S. Development and validation of a sensitive and selective UHPLC-MS/MS method for quantitation of an investigational anti-malarial compound, 2-tert-butylprimaquine (NP-96) in rat plasma, and its application in a preclinical pharmacokinetic study. J Pharm Biomed Anal2010 Jul 8;52(3):410-5doi: 10.1016/j.jpba.2009.05.033. Epub 2009 Jun 6. PubMed PMID: 19574014.


  1. Prasad B, Singh S. In vitro and in vivo investigation of metabolic fate of rifampicin using an optimized sample preparation approach and modern tools of liquid chromatography-mass spectrometry. J Pharm Biomed Anal2009 Oct 15;50(3):475-90doi: 10.1016/j.jpba.2009.05.009. Epub 2009 May 22. PubMed PMID: 19535209.

  2. Savaliya AA, Prasad B, Raijada DK, Singh S. Detection and characterization of synthetic steroidal and non-steroidal anti-inflammatory drugs in Indian ayurvedic/herbal products using LC-MS/TOF. Drug Test Anal2009 Aug;1(8):372-81doi: 10.1002/dta.75. PubMed PMID: 20355217.

  3. Singh S, Prasad B, Savaliya AA, Shah RP, Gohil VM, Kaur A. Strategies for characterizing sildenafil, vardenafil, tadalafil and their analogues in herbal dietary supplements, and detecting counterfeit products containing these drugs. TrAC Trends in Analytical Chemistry. 2009 January; 28:13-28doi: doi:10.1016/j.trac.2008.09.004.


  1. Prasad B, Kumar V, Bhutani H, Singh S. Screening of bulk drug samples and anti-tuberculosis products for the presence of therapeutically less active diasteriomeric (R,S) form of ethambutol dihydrochloride. Indian J Tuberc2008 Oct;55(4):192-8PubMed PMID: 19295106.


  1. Prasad B, Bhutani H, Kumar V, Singh S. A new validated DSC method for monitoring of less active R,S isomer of ethambutol dihydrochloride in bulk drug samples and anti-tuberculosis formulations. Pharmacopeial Forum. 2007; 33:326-333.


  1. Singh S, Bhutani H, Prasad B. Refocus on the stability and quality of anti-tuberculosis formulations. Int J Tuberc Lung Dis2006 Sep;10(9):1064-5; author reply 1065PubMed PMID: 16964804.

  2. Prasad B, Bhutani H, Singh S. Study of the interaction between rifapentine and isoniazid under acid conditions. J Pharm Biomed Anal2006 Jun 16;41(4):1438-41doi: 10.1016/j.jpba.2006.03.004. Epub 2006 Apr 18. PubMed PMID: 16621412.