Oxfendazole: benzimidazole anthelmintic (veterinary).
Oxfendazole testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Oxfendazole: 2D structure drawn from the PubChem record (CID 40854).
53716-50-0
C15H13N3O3S
315.35 g/mol
Benzimidazole anthelmintic (veterinary)
Identity: Oxfendazole
IUPAC name: methyl N-[6-(benzenesulfinyl)-1H-benzimidazol-2-yl]carbamate
Method for the $250 identity, purity and quantity test: HPLC-UV purity and assay, LC-MS identity, against a reference standard, with results in 3 to 5 business days.
The USP monograph covers identity by infrared spectroscopy and thin-layer chromatography, assay by nonaqueous titration, related compounds by thin-layer chromatography, loss on drying, and residue on ignition. Full testing to the USP Oxfendazole monograph is available and quoted.
Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.
| Add-on test | Price |
|---|---|
| Identity and impurities | |
| FTIR identity | $90 |
| CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur) | $125 |
| Chiral purity (where a chiral method exists; new methods quoted) | $250 |
| Water, solvents and salt form | |
| Water content by Karl Fischer | $60 |
| Residual solvents | $150 |
| Counterions: chloride, acetate and TFA | $70 |
| Assay | |
| Assay, % w/w (with raw powder purity; $250 together) | +$50 |
| Metals and conformity | |
| Heavy metals: arsenic, cadmium, chromium, mercury and lead | $150 |
| Conformity: purity and quantity on more units from the same lot | $100 per extra unit |
| Microbiology (injectables) | |
| Endotoxin | $210 |
| Sterility or bioburden | $150 |
| Container closure integrity (CCI) | $50 |
| Screening | |
| Fentanyl screen | $50 |
10% off for 10 or more samples.
Need something else? Other tests are available on request.
Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.
No. The $250 test covers identity, purity and quantity by HPLC-UV for purity and quantity and LC-MS for identity. Full testing to the USP Oxfendazole monograph is available and quoted.
Oxfendazole is the sulfoxide of fenbendazole, and it can be reduced back to fenbendazole or oxidized further to the sulfone. The three compounds separate by HPLC and differ in mass in steps of 16 units, so LC-MS tells them apart.
Oxfendazole has a chiral sulfur atom and is supplied as a racemate. The standard HPLC test measures total oxfendazole; separating the two enantiomers needs a chiral method, which is quoted separately.
Oxfendazole usually arrives as raw powder or as an oral suspension. Suspensions are dispersed and fully extracted before HPLC so that undissolved drug is not missed.
https://pubchem.ncbi.nlm.nih.gov/compound/40854
Identity facts from the USP monograph header for this compound.
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