PENETAPAN KADAR PIPERIN DALAM EKSTRAK BUAH LADA HITAM (Piper nigrum Linn.) MENGGUNAKAN LIQUID CHROMATOGRAPHY TANDEM MASS SPECTROMETRY (LC–MS/MS) Journal title: Jurnal Ilmiah Farmasi Farmasyifa (JIFF) Authors: Alifia Putri Febriyanti, Siti Jazimah Iswarin, Susanti Susanti Subject(s): Pharmacology, Pharmacy, Pharmacognosy