𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Isolation and identification of piperacillin amide as an impurity in piperacillin

✍ Scribed by Marshall M. Siegel; Richard Mills; Lane Gehrlein; William E. Gore; George Morton; Donna Cosulich; Jeffrey Medwid; P. Mirando; T. Chang

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
445 KB
Volume
73
Category
Article
ISSN
0022-3549

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Purification and identification of an im
Purification and identification of an impurity in bulk hydrochlorothiazide
✍ Xueguang Fang; Richard Todd Bibart; Suzanne Mayr; Winnie Yin; Paul A. Harmon; Je 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 232 KB

Hydrochlorothiazide (6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7sulfonamide 1,1-dioxide) (HCTZ) 1 is a widely used diuretic and anti-hypertensive. Recently, the Pharmeuropa recognized a new impurity initially thought to be an HCTZ dimer 6, which consists of the active drug (HCTZ) linked via the

Isolation and characterization of a nove
Isolation and characterization of a novel tetrahydro-[2,2′]bipyrrolyl dimer as an impurity from a knorr reaction
✍ Alison Thompson; Yousef Alattar; Cory S. Beshara; Rodney K. Burley; T. Stanley C 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 225 KB

## Abstract A novel dimer, tetraethyl 2,2′,3,3′‐tetramethyl‐1,1′,2,2′‐tetrahydro‐4__H__,4′__H__‐2,2′‐bipyrrolyl‐5,5,5′,5′‐tetracarboxylate, has been isolated as an impurity (0.4% yield) from a Knorr reaction for the synthesis of ethyl 3,5‐dimethylpyrrole‐2‐carboxylate from 2,4‐pentanedione and diet