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Technical Data
| Formula | C17H21NO.HCl |
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| Molecular Weight | 291.82 | CAS No. | 147-24-0 | |
| Solubility (25°C)* | In vitro | DMSO | 58 mg/mL (198.75 mM) | |
| Water | 58 mg/mL (198.75 mM) | |||
| Ethanol | 58 mg/mL (198.75 mM) | |||
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* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. * Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.) |
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Preparing Stock Solutions
Biological Activity
| Description | Diphenhydramine HCl is a first-generation histamine H1 receptor antagonist, used in various allergic conditions such as rhinitis, urticaria and conjunctivitis. | |
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| In vitro | Diphenhydramine blocks tetrodotoxin-sensitive (TTX-S) and tetrodotoxin-resistant (TTX-R) sodium currents with K(d) values of 48 mM and 86 mM, respectively, at a holding potential of -80 mV. Diphenhydramine shifts the conductance-voltage curve for TTX-S sodium currents in the depolarizing direction but has little effect on that for TTX-R sodium currents. Diphenhydramine causes a shift of the steady-state inactivation curve for both types of sodium currents in the hyperpolarizing direction. Diphenhydramine produces a profound use-dependent block when the cells are repeatedly stimulated with high-frequency depolarizing pulses. [1] Diphenhydramine induces apoptosis in a dose- and time-dependent manner in both CCRF-CEM and Jurkat cell lines, whereas Cimetidine fails to induce significant effects at similar concentrations. Diphenhydramine-induced apoptosis is evaluated in terms of morphology, flow cytometry, and the release of cytochrome c to the cytosol. Diphenhydramine inhibits cell proliferation without inducing apoptosis in human peripheral blood mononuclear cells. [2] Diphenhydramine (500 nM) significantly reduces the baseline firing of the periaqueductal gray neurons without a significant effect on the frequency of postsynaptic potentials. Diphenhydramine at high concentration inhibits periaqueductal gray neurons, but at low concentrations it has no effect on the baseline-firing rate and it blocks the response to neurotensin and tomedial preoptic nucleus stimulation. [3] |
Protocol (from reference)
References
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Selleck's Diphenhydramine HCl has been cited by 3 publications
| Entry of therapeutics into the brain: Influence of exposed polarity calculated in silico and measured in vitro by supercritical fluid chromatography. [ Int J Pharm, 2019, 560:294-305] | PubMed: 30771469 |
| Histamine Receptor Antagonists, Loratadine and Azelastine, Sensitize P-gp-overexpressing Antimitotic Drug-resistant KBV20C Cells Through Different Molecular Mechanisms. [ Anticancer Res, 2019, 39(7):3767-3775] | PubMed: 31262903 |
| In Vitro Micropatterned Human Pluripotent Stem Cell Test (µP-hPST) for Morphometric-Based Teratogen Screening. [Xing J, et al. Sci Rep, 2017, 7(1):8491] | PubMed: 28819231 |
RETURN POLICY
Selleck Chemical’s Unconditional Return Policy ensures a smooth online shopping experience for our customers. If you are in any way unsatisfied with your purchase, you may return any item(s) within 7 days of receiving it. In the event of product quality issues, either protocol related or product related problems, you may return any item(s) within 365 days from the original purchase date. Please follow the instructions below when returning products.
SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.
NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.