فهرس المقالات Thiamine hydrochloride (VB1) حرية الوصول المقاله صفحة الملخص نص كامل 1 - Thiamine hydrochloride (vitamin B1) as an efficient catalyst for the synthesis of 4-(3H)-Quinazolinone derivatives using grinding method. Deepak Kawade Mahendra Chaudhari Jitendra Gujar Murlidhar Shingare