Impurity Reference Standard - Products

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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Fosfomycin and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Fosfomycin impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Fosfomycin-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Fosfomycin Calcium Hydrate

CAT No: CL-FFMN-01 CAS No: 26469-67-0 Mol Wt: 138.1 : 40.1 : 18.0 Mol F: C3H7O4P : Ca : H2O Inv Status: Custom Synthesis

Chemical Name: Calcium (2R,3S)-(3-methyloxiran-2-yl)phosphonate monohydrate

Fosfomycin Tromethamine

CAT No: CL-FFMN-02 CAS No: 78964-85-9 Mol Wt: 138.1 : 121.1 Mol F: C3H7O4P : C4H11NO3 Inv Status: Custom Synthesis

Chemical Name: NA2-Amino-2-(hydroxymethyl)propane-1,3-diol ((2R,3S)-3-methyloxiran-2-yl)phosphonate phosphate

Fosfomycin EP Impurity A Calcium Salt

CAT No: CL-FFMN-03 CAS No: NA Mol Wt: 154.1 : 40.1 Mol F: C3H7O5P : Ca Inv Status: Custom Synthesis

Chemical Name: Calcium (1,2-dihydroxypropyl)phosphonate

Fosfomycin EP Impurity B

CAT No: CL-FFMN-04 CAS No: 1262243-11-7 Mol Wt: 259.2 Mol F: C7H18NO7P Inv Status: Custom Synthesis

Chemical Name: (2-(2-Amino-3-hydroxy-2-(hydroxymethyl)propoxy)-1-hydroxypropyl)phosphonic acid

Fosfomycin Trometamol EP Impurity C

CAT No: CL-FFMN-05 CAS No: 23001-39-0 Mol Wt: 201.1 Mol F: C4H12NO6P Inv Status: Custom Synthesis

Chemical Name: 2-Amino-3-hydroxy-2-(hydroxymethyl)propyl dihydrogen phosphate

Fosfomycin Trometamol EP Impurity D

CAT No: CL-FFMN-06 CAS No: 1262243-12-8 Mol Wt: 397.3 Mol F: C10H25NO11P2 Inv Status: Custom Synthesis

Chemical Name: (2-(((2-(2-Amino-3-hydroxy-2-(hydroxymethyl)propoxy)-1-hydroxypropyl)(hydroxy)phosphoryl)oxy)-1-hydroxypropyl)phosphonic acid

Fosfomycin Trometamol EP Impurity A

CAT No: CL-FFMN-07 CAS No: 84954-80-3 Mol Wt: 156.1 Mol F: C3H9O5P Inv Status: Custom Synthesis

Chemical Name: (1,2-Dihydroxypropyl)phosphonic acid

Fosfomycin Open Ring Impurity A

CAT No: CL-FFMN-08 CAS No: 1160525-87-0 Mol Wt: 156.1 : 2(17.0) Mol F: C3H9O5P : 2NH3 Inv Status: Custom Synthesis

Chemical Name: ((1R,2R)-1,2-Dihydroxypropyl)phosphonic acid, Diammonia salt

Fosfomycin

CAT No: CL-FFMN-09 CAS No: 23155-02-4 Mol Wt: 138.1 Mol F: C3H7O4P Inv Status: Custom Synthesis

Chemical Name: ((2R,3S)-3-methyloxiran-2-yl)phosphonic acid

Fosfomycin Calcium

CAT No: CL-FFMN-10 CAS No: 26016-98-8 Mol Wt: 138.1 Mol F: C3H7O4P Inv Status: Custom Synthesis

Chemical Name: ((2R,3S)-3-methyloxiran-2-yl)phosphonic acid, calcium salt

Fosfomycin Cis-Propenyl Impurity

CAT No: CL-FFMN-11 CAS No: 933443-26-6 Mol Wt: 122.1 : 121.2 Mol F: C3H7O3P : C8H11N Inv Status: Custom Synthesis

Chemical Name: (R)-1-Phenylethan-1-amine (Z)-prop-1-en-1-ylphosphonate

Fosfomycin Diastereomer 1

CAT No: CL-FFMN-12 CAS No: 27357-50-2 Mol Wt: 138.1 Mol F: C3H7O4P Inv Status: Custom Synthesis

Chemical Name: ((2S,3S)-3-methyloxiran-2-yl)phosphonic acid

Fosfomycin Diastereomer 2

CAT No: CL-FFMN-13 CAS No: 45629-00-3 Mol Wt: 138.1 Mol F: C3H7O4P Inv Status: Custom Synthesis

Chemical Name: ((2R,3R)-3-methyloxiran-2-yl)phosphonic acid

Fosfomycin Sucrose Ether Disodium Salt

CAT No: CL-FFMN-14 CAS No: NA Mol Wt: 478.3 Mol F: C15H27O15P Inv Status: Custom Synthesis

Chemical Name: Sodium ((1R,2R)-2-(((2R,3S,4S,5S)-3,4-dihydroxy-5-(hydroxymethyl)-5-(((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydrofuran-2-yl)methoxy)-1-hydroxypropyl)phosphonate

Fosfomycin Tromethamine Impurity

CAT No: CL-FFMN-15 CAS No: NA Mol Wt: 480.4 Mol F: C15H29O15P Inv Status: Custom Synthesis

Chemical Name: (2-(((2R,3S,4S,5S)-3,4-Dihydroxy-5-(hydroxymethyl)-5-(((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydrofuran-2-yl)methoxy)-1-hydroxypropyl)phosphonic acid

Fosfomycin Tromethamine Phosphate

CAT No: CL-FFMN-16 CAS No: NA Mol Wt: 138.1 : 121.1 : 98.0 Mol F: C3H7O4P : C4H11NO3 : H3O4P Inv Status: Custom Synthesis

Chemical Name: 2-Amino-2-(hydroxymethyl)propane-1,3-diol ((2R,3S)-3-methyloxiran-2-yl)phosphonate phosphate

Fosfomycin Methoxy Open Ring Impurity

CAT No: CL-FFMN-17 CAS No: NA Mol Wt: 170.1 Mol F: C4H11O5P Inv Status: Custom Synthesis

Chemical Name: ((1R,2R)-1-Hydroxy-2-methoxypropyl)phosphonic acid

Fosfomycin Tromethamine-D5

CAT No: CL-FFMN-18 CAS No: NA Mol Wt: 143.1 : 121.1 Mol F: C3H2D5O4P : C4H11NO3 Inv Status: Custom Synthesis

Chemical Name: 2-Amino-2-(hydroxymethyl)propane-1,3-diol ((2R,3S)-3-(methyl-d3)oxiran-2-yl-2,3-d2)phosphonate

Type:Impurity Reference Standard

Total Products: 18

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