Diltiazem hydrochloride: calcium channel blocker (benzothiazepine).
Diltiazem hydrochloride testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Diltiazem hydrochloride: 2D structure drawn from the PubChem record (CID 62920).
33286-22-5
C22H26N2O4S · HCl
450.98 g/mol
Calcium channel blocker (benzothiazepine)
Identity: Diltiazem hydrochloride
IUPAC name: [(2S,3S)-5-[2-(dimethylamino)ethyl]-2-(4-methoxyphenyl)-4-oxo-2,3-dihydro-1,5-benzothiazepin-3-yl] acetate;hydrochloride
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, HPLC retention time and a chloride test, assay by HPLC, organic impurities by HPLC, residue on ignition, optical rotation, and loss on drying. Full testing to the USP Diltiazem Hydrochloride 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 Diltiazem Hydrochloride monograph is available and quoted.
Desacetyl diltiazem forms when the acetate ester of diltiazem hydrolyzes, especially in solution or with heat and moisture. It is the main degradation product and is a separate HPLC peak, 42 mass units lighter.
Diltiazem is supplied and labeled as the hydrochloride, so results are reported on that basis unless another basis is requested.
https://pubchem.ncbi.nlm.nih.gov/compound/62920
Identity facts from the USP monograph header for this compound.
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