Drug Standards
Sigma Aldrich Fine Chemicals Biosciences (E)-Thiothixene United States Pharmacopeia (USP) Reference Standard | 3313-27-7 | 100MG
(E)-Thiothixene United States Pharmacopeia (USP) Reference Standard | Mol Wt: 443.63 | 3313-27-7 | 100MG
Apexbio Technology LLC Citalopram hydrobromide 59729-32-7 50mg
Citalopram hydrobromide (CAS 59729-32-7) is a selective serotonin reuptake inhibitor (SSRI) that functions by specifically blocking the reuptake of 5-hydroxytryptamine (5-HT) at presynaptic neuronal membranes thereby increasing 5-HT concentrations in the synaptic cleft In vitro studies demonstrate that citalopram hydrobromide exhibits potent nanomolar-level inhibition of 5-HT reuptake in synaptosomal preparations as well as low nanomolar inhibition in rabbit platelet assays This compound is widely utilized in research exploring serotonergic signaling neurotransmission processes and experimental models of depression
Sigma Aldrich Fine Chemicals Biosciences Cyproheptadine hydrochloride United States Pharmacopeia (USP) Reference Standard | 41354-29-4 | 500MG
Cyproheptadine hydrochloride United States Pharmacopeia (USP) Reference Standard | Mol Wt: 350.88 | 41354-29-4 | 500MG
Medchemexpress LLC Diltiazem (hydrochloride) | 33286-22-5 | 99.47% | 450.98 | 1 ML
Diltiazem hydrochloride is a Ca2+ influx inhibitor, also known as a slow channel blocker or calcium antagonist. Intended for research use only, this benzothiazepine Ca2+ antagonist interacts with transmembrane segments IIIS6 and IVS6 in the α1 subunit of L-type Ca2+ channels. It causes a dose-dependent inhibition of contractions and Ca2+ influx stimulated by alpha adrenoceptor activation and high-K+ depolarization.
- Ca2+ influx inhibitor
- Slow channel blocker or calcium antagonist
- Interacts with transmembrane segments IIIS6 and IVS6 in the α1 subunit of L-type Ca2+ channels
- Causes dose-dependent inhibition of contractions and Ca2+ influx
- Inhibits Na-dependent Ca-efflux from heart mitochondria
- Improves cardiac microcirculation and function in hyperthyroid rats
- Decreases blood pressure and increases heart rate in hypertensive rats
- L-type calcium channel is the IC50 target
Sigma Aldrich Fine Chemicals Biosciences Acebutolol impurity I European Pharmacopoeia (EP) Reference Standard | 441019-91-6 |
Acebutolol impurity I European Pharmacopoeia (EP) Reference Standard | Mol Wt: 322.4 | 441019-91-6 |
Sigma Aldrich Fine Chemicals Biosciences Dosulepin impurity A European Pharmacopoeia (EP) Reference Standard | 42046-35-5 |
Dosulepin impurity A European Pharmacopoeia (EP) Reference Standard | Mol Wt: 311.44 | 42046-35-5 |
Sigma Aldrich Fine Chemicals Biosciences Josamycin propionate European Pharmacopoeia (EP) Reference Standard | 31674-19-8 |
Josamycin propionate European Pharmacopoeia (EP) Reference Standard | Mol Wt: 884.06 | 31674-19-8 |
Sigma Aldrich Fine Chemicals Biosciences Meloxicam Related Compound C United States Pharmacopeia (USP) Reference Standard | 118854-48-1 | 30MG
Meloxicam Related Compound C United States Pharmacopeia (USP) Reference Standard | Mol Wt: 297.33 | 118854-48-1 | 30MG
Sigma Aldrich Fine Chemicals Biosciences Methotrexate impurity E European Pharmacopoeia (EP) Reference Standard | 19741-14-1 |
Methotrexate impurity E European Pharmacopoeia (EP) Reference Standard | Mol Wt: 324.32 | 19741-14-1 |
Sigma Aldrich Fine Chemicals Biosciences Anhydro simvastatin United States Pharmacopeia (USP) Reference Standard | 210980-68-0 | 30MG
Anhydro simvastatin United States Pharmacopeia (USP) Reference Standard | Mol Wt: 400.55 | 210980-68-0 | 30MG
Sigma Aldrich Fine Chemicals Biosciences Acebutolol Related Compound I United States Pharmacopeia (USP) Reference Standard | 441019-91-6 | 20MG
Acebutolol Related Compound I United States Pharmacopeia (USP) Reference Standard | Mol Wt: 322.4 | 441019-91-6 | 20MG
Sigma Aldrich Fine Chemicals Biosciences Doxepin Related Compound B United States Pharmacopeia (USP) Reference Standard | 4504-88-5 | 50MG
Doxepin Related Compound B United States Pharmacopeia (USP) Reference Standard | Mol Wt: 297.39 | 4504-88-5 | 50MG
Medchemexpress LLC Donepezil (S)-enantiomer | 142057-80-5 | MFCD00912833 | 379.49 g/mol | C24H29NO3 | 5 MG
(S)-Donepezil is the S-enantiomer of donepezil, a potent and selective acetylcholinesterase (AChE) inhibitor used in research to probe cholinergic signaling and AChE-related pathways. The compound is supplied as a solid and as a 10 mM solution in DMSO and is intended for research use only.
- Potent acetylcholinesterase inhibition suitable for biochemical and cellular assays.
- Available as powder and DMSO solution for flexible dosing and preparation.
- Known chemical formula C24H29NO3 and molecular weight 379.49 g/mol for accurate calculations.
- Storage recommendations provided to preserve stability (powder and in solvent conditions).
- Batch-specific purity and documentation available upon request to support experimental reproducibility.
Sigma Aldrich Fine Chemicals Biosciences Nomegestrol acetate impurity A European Pharmacopoeia (EP) Reference Standard | 32420-14-7 |
Nomegestrol acetate impurity A European Pharmacopoeia (EP) Reference Standard | Mol Wt: 372.5 | 32420-14-7 |
Cayman Chemical Losartan potassium salt
An AT1b antagonist (IC50 = 2.2 nM in COS-7 cells expressing the rat receptor); reduces U-46619-induced aggregation of platelets in isolated human platelet-rich plasma at 5 µM; decreases 1-LO levels in the endothelial layer of autologous vein grafts in rabbits fed a high-cholesterol diet at 10 mg/kg per day; decreases systolic blood pressure in a ouabain-induced mouse model of hypertension at 15 mg/kg per day; increases the mechanical pain threshold in the von Frey test in a paclitaxel-induced rat model of neuropathic pain at 50 mg/kg twice per day