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diazepam d5  (Toronto Research Chemicals)


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    Toronto Research Chemicals diazepam d5
    Diazepam D5, supplied by Toronto Research Chemicals, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/diazepam+d5/Diazepam-d5/pm40795634-52-17-19
    Average 93 stars, based on 1 article reviews
    diazepam d5 - by Bioz Stars, 2026-09
    93/100 stars

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    other:

    Article Title: Simultaneous extraction of acidic and basic drugs from urine using mixed-mode monolithic silica spin column bonded with octadecyl and cation-exchange group.
    Article Snippet: A method coupling spin column extraction with gas chromatography-mass spectrometry was developed for the simultaneous extraction of acidic and basic drugs from urine.. Benzodiazepines, local anaesthetics, antidepressants, and barbiturates were used as model drugs.. Sample loading, washing, and elution of the target drugs were accomplished by centrifugation of the column.

    Article Title: Bioaugmentation of sewage sludge with Trametes versicolor in solid-phase biopiles produces degradation of pharmaceuticals and affects microbial communities.
    Article Snippet: The isotopically labelled compounds, used as internal standards, were sulfamethazine-d4, rac-timolol-d5 maleate, clarithromycin-n-methyl-d3, atorvastatin-d5 sodium salt, fenofibrate-d6, metoprolol-d7, metronidazole hydroxyl-d2, pravastatin-d3, rac-naproxen-d3, mefenamic acid-d3, gemfibrozil-d6, bezafibrate-d4 and furosemide-d5 from Toronto Research Chemicals; diazepam-d5 and phenobarbital-d3 from Cerilliant (Texas, USA); atenolol-d7, carbamazepine-d10, ibuprofen-d3, enalapril–d5, hydrochlorothiazide-d2, glyburide-d3, albuterol-d3, cimetidine-d3, antipyrine-d3, acetaminophen-d4, diclofenac-d4, clofibric-d4 acid, hydrochlorothiazide-3,3-d2 from CDN Isotopes (Quebec, Canada); sotalol hydrochloride d6 from Dr. Ehrenstorfer (Augsburg, Germany) Isotec (Ohio, USA).

    Article Title: Multi-residue ultra-performance liquid chromatography coupled with tandem mass spectrometry method for comprehensive multi-class anthropogenic compounds of emerging concern analysis in a catchment-based exposure-driven study
    Article Snippet: Amitrpityline-d3, amoxicillin-d4, capecitabine-d11, ciprofloxacin-d8, citalopram-d6, diazepam-d5, erythromycin-13C,d3, fluoxetine-d5, gabapentin-d4, imidacloprid-d4, metazachlor-d6, metoprolol-d7, mirtazapine-d3, norsertraline-d4, nortriptylined3, ofloxacin-d3, oxazepam-d5, sildenafil-d8 and verapamil-d7 were purchased from Toronto Research Chemicals (TRC) (Toronto, Canada).

    Article Title: Development and validation of a 'dilute and shoot' LC-MS/MS method in urine suitable for screening and confirmation analyses in a clinical setting.
    Article Snippet: Clozapine-d4 and MDMA-d5 were obtained from LGC GmbH (Luckenwalde, Germany), morphine-d3 from Cerilliant Corporation (Texas, USA) and diazepam-d5 from Toronto Research Chemicals, which were used as internal standards (IS).

    Article Title: Determination of the unbound fraction of R- and S-methadone in human brain.
    Article Snippet: According to the free drug hypothesis, only the unbound fraction (fu) of a given drug is biologically available in terms of its pharmacologic activity.. Methadone shows large interpersonal variation in toxicity.. The goal of the work presented here was to examine whether isolating the unbound fraction of the active R-methadone enantiomer from brain matter could be of value as a forensic tool.

    Article Title: Multi-residue ultra-performance liquid chromatography coupled with tandem mass spectrometry method for comprehensive multi-class anthropogenic compounds of emerging concern analysis in a catchment-based exposure-driven study
    Article Snippet: Amitrpityline-d3, amoxicillin-d4, capecitabine-d11, ciprofloxacin-d8, citalopram-d6, diazepam-d5, erythromycin-13C,d3, fluoxetine-d5, gabapentin-d4, imidacloprid-d4, metazachlor-d6, metoprolol-d7, mirtazapine-d3, norsertraline-d4, nortriptyline-d3, ofloxacin-d3, oxazepam-d5, sildenafil-d8 and verapamil-d7 were purchased from Toronto Research Chemicals (TRC) (Toronto, Canada).

    Article Title: Biocompatible SPME coupled to GC/MS for analysis of xenobiotics in blood plasma.
    Article Snippet: This work proposes a new method for biomonitoring studies focused on the screening and quantification of xenobiotics in blood-derived samples.. The performance of a polydimethylsiloxane/divinylbenzene/polydimethylsiloxane (PDMS/DVB/PDMS) biocompatible extraction phase was investigated for extraction of pesticides and pharmaceuticals from plasma samples via direct immersion solid-phase microextraction (SPME) prior to gas chromatography-mass spectrometry.. Under the optimum extraction settings, which included an attentive optimization of the fiber rinsing conditions, the microextraction device was able to endure 100 consecutive extractions from undiluted and diluted plasma with an overall reproducibility up to 28% for all the analytes tested, except chlorpyrifos-methyl.



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    Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard <t>(diazepam-d5),</t> respectively. n.d.: not detected
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    Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard <t>(diazepam-d5),</t> respectively. n.d.: not detected
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    Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard <t>(diazepam-d5),</t> respectively. n.d.: not detected
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    Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard <t>(diazepam-d5),</t> respectively. n.d.: not detected
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    Image Search Results


    Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard (diazepam-d5), respectively. n.d.: not detected

    Journal: Journal of Natural Medicines

    Article Title: Metabolism of coclaurine into the WADA-banned substance higenamine: a doping-relevant analytical evaluation of Kampo extracts

    doi: 10.1007/s11418-025-01940-4

    Figure Lengend Snippet: Detection of higenamine and coclaurine in mice A urine and B feces by LC–MS/MS analysis. The samples were collected at 12, 24, and 48 h after oral administration of authentic coclaurine into BALB/cCrSlc (0.5 mg/mL, 15 mg/kg). Area and IS-area indicate area of sample and internal standard (diazepam-d5), respectively. n.d.: not detected

    Article Snippet: Diazepam-d5, provided as the NAGINATA Internal Standard Solution, was purchased from Hayashi Pure Chemical Ind., Ltd. (Osaka, Japan).

    Techniques: Liquid Chromatography with Mass Spectroscopy

    In vitro metabolisms of coclaurine in A phase I and B phase II reaction by HLM. Coclaurine was incubated with HLM, and metabolites at 0, 1, 3, 6, 12, and 24 h were analyzed by LC–MS/MS based on higenamine, coclaurine, and their glucuronide conjugates. Area and S-Area indicate area of sample and internal standard (diazepam-d5), respectively

    Journal: Journal of Natural Medicines

    Article Title: Metabolism of coclaurine into the WADA-banned substance higenamine: a doping-relevant analytical evaluation of Kampo extracts

    doi: 10.1007/s11418-025-01940-4

    Figure Lengend Snippet: In vitro metabolisms of coclaurine in A phase I and B phase II reaction by HLM. Coclaurine was incubated with HLM, and metabolites at 0, 1, 3, 6, 12, and 24 h were analyzed by LC–MS/MS based on higenamine, coclaurine, and their glucuronide conjugates. Area and S-Area indicate area of sample and internal standard (diazepam-d5), respectively

    Article Snippet: Diazepam-d5, provided as the NAGINATA Internal Standard Solution, was purchased from Hayashi Pure Chemical Ind., Ltd. (Osaka, Japan).

    Techniques: In Vitro, Incubation, Liquid Chromatography with Mass Spectroscopy