عبد الرحمن جمال حسن; أ.م.د. عمر عبد الحي شيخ احمد. Using 2,4- Dinitroaniline As a Reagent for the Spectrophotometric Determination of Vancomycin Hydrochloride by Diazotization Coupling Reaction. jhas 2024, 9 (2), 451-470. https://doi.org/10.58916/jhas.v9i2.274.