فهرس المقالات Pyrano-pyrazol حرية الوصول المقاله صفحة الملخص نص كامل 1 - Magnetically recoverable nano-crystalline NiFe2O4 catalyzed green and sustainable synthesis of functionalized pyrano-pyrazol, pyrano-coumarin, and 4H-chromene derivatives Koyel Pradhan 10.30495/ijc.2023.1993771.2041