Potassium Clavulanate impurities and related standards
Potassium Clavulanate is held here as a working collection of 31 reference materials across 10 CAS numbers. Within the range, the lettered series runs from B to M with 4 letters present. and 2 EP-designated impurities are named explicitly 27 of the entries are impurity-type materials of the parent, 28 are salt or counter-ion variants and 1 are nitrosamine analogues. 10 entries carry a verified structure drawing, a coverage of 32%; the rest are listed without a structure rather than with an unverified one. 10 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 21 remain tier C and are kept for search coverage. Method transfer is the usual reason a laboratory needs the whole set rather than a few members: specificity has to be demonstrated against every impurity that could plausibly co-elute, and a spiked solution prepared from the actual standards is the accepted way to do it. The mass balance check is the step most often skipped: the sum of the parent assay and the specified impurities should account for the sample, and a series that is incomplete makes that sum look better than it is.
Sources: DailyMed (US NLM) - AMOXICILLIN AND CLAVULANATE POTASSIUM TABLET, FILM COATED [REMEDYREPACK INC.].
13 reference standards related to Potassium Clavulanate held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
In this group: 4 general reference standards · 3 fine chemicals · 3 impurity reference standards · 2 drug metabolite standards. CAS numbers are listed for 13 of 13; 12 entries carry a structure drawing.
On this page
13 reference standards
All entries — structure, identifiers and pack sizes
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Potassium clavulanate
IN STOCKRS-I002145 -
N-Nitroso Potassium Clavulanate EP Impurity L
IN STOCKRS-Z401J9C -
Potassium Clavulanate EP Impurity G Enantiomer
IN STOCKRS-P154002 -
Potassium Clavulanate EP Impurity J
CUSTOM SYNTHESISRS-Z394689 -
1-Amino-4-hydroxy-2-butanone Hydrochloride
IN STOCKRS-D123077 -
3-Methyl-2,5-pyrazinedimethanol
IN STOCKRS-U211LEK -
7-Oxo-4-oxa-1-azabicyclo[3.2.0]heptane-3-carboxylic acid
CUSTOM SYNTHESISRS-Z401KGM -
CDHW-BW081590-1-50mL
IN STOCKRS-U001240 -
Clavulanic Acid 2-Amino-2,4,4-trimethylpentane Salt
IN STOCKRS-U065847 -
Potassium Clavulanate Impurity 3
IN STOCKRS-I001219 -
Potassium Clavulanate impurity 22
CUSTOM SYNTHESISRS-Z400YQE -
Potassium Clavulanate impurity 25
IN STOCKRS-Z400QZN
13 reference standards
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![Chemical structure of 7-Oxo-4-oxa-1-azabicyclo[3.2.0]heptane-3-carboxylic acid](/structures/w4/NMPWOLAIBCYZEP-UHFFFAOYSA-N.webp?v=9)




