aDepartment of Pharmaceutical Analysis, Sree Dattha Institute of Pharmacy, Sheriguda, Hyderabad - 501 510, Telangana, India
bDepartment of Pharmaceutical Chemistry, School of Pharmacy, Swami Ramanand Teerth Marathwada University, Vishnupuri, Nanded - 431 606, Maharashtra, India
cDeparment of Chemistry, Sri Krishnadevaraya University, Ananthapuramu - 515 003, Andhra Pradesh, India
*For Correspondence E-mail: dangepharma@gmail.com
https://doi.org/10.53879/id.57.03.11331
ABSTRACT
A Simple, accurate precise and validated FTIR method was developed for the determination ofpregabalin (PRG) and methylcobalamin (MCA) in bulk as well as in tablet dosage form. The drug was analyzed by FTIR spectrophotometry with DRIFT sampling technique. wavenumber ranges 1660-1600 cm-1 (-COOH) and3400-3250 cm−1(-CONH2) were selected for pregabalin and methylcobalamin, respectively. The method was found to be linear over the range of PRG 1–6% w/w and MCA 0.2–1.2% w/w with good regression coefficient (r2) of PRG 0.9960 and MCA 0.9976. The percent recovery of pregabalin and methylcobalamin in marketed tablet dosage form was in the range of 98.25 – 99.00% and 98.62 – 99.60%, respectively. The LOD & LOQ were found 1.4003 & 4.2434 of PRG and 0.2027 & 0.6142 of MCA, respectively.The developed FTIR method was validated as per ICH guidelines and it can be used for the estimation of both drugs in combined dosage form.
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