Carbinoxamine maleate: antihistamine (ethanolamine H1 blocker).
Carbinoxamine maleate testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Carbinoxamine maleate: 2D structure drawn from the PubChem record (CID 5282409).
3505-38-2
C16H19ClN2O · C4H4O4
406.86 g/mol
Antihistamine (ethanolamine H1 blocker)
Identity: Carbinoxamine maleate
IUPAC name: (Z)-but-2-enedioic acid;2-[(4-chlorophenyl)-pyridin-2-ylmethoxy]-N,N-dimethylethanamine
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, UV spectroscopy and HPLC retention time, assay by HPLC, organic impurities by HPLC, and residue on ignition, pH and loss on drying. Full testing to the USP Carbinoxamine 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 assay, with LC-MS to confirm identity. Full testing to the USP Carbinoxamine monograph is available and quoted.
The material is normally the maleate salt, and results are reported against the salt unless you ask for the free base. The maleate counter-ion makes up about 29 percent of the salt by weight, so the basis matters when comparing to a label.
Maleic acid from the salt elutes as its own early peak and is not counted as an impurity of carbinoxamine. Related compounds from synthesis and degradation are reported separately.
Carbinoxamine maleate is a racemic mixture. The standard HPLC purity test does not separate the enantiomers, and chiral testing is quoted separately.
https://pubchem.ncbi.nlm.nih.gov/compound/5282409
Identity facts from the USP monograph header for this compound.
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