T4 1KG Raw Powder | Thyroxine

QSC T4 (Thyroxine / Levothyroxine) (Thyroid Hormone / TR Agonist) — ≥99% HPLC purity, MS confirmed, Janoshik COA. 1KG bulk. Research use only.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Ships from China (🇨🇳)

$7,500

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SKU: QSC-052-T4-1KG-RAWPOWDER
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SynthesisChina Warehouse

What is T4 (Thyroxine / Levothyroxine)?

T4 (Thyroxine/Levothyroxine) is the primary secretory product of the thyroid gland — a prohormone converted to active T3 (triiodothyronine) by deiodinase enzymes. Acts on thyroid receptors (TRα/TRβ) to regulate metabolism, thermogenesis, cardiac function, and gene expression. Research tool for thyroid hormone pharmacology, metabolic rate, and HPT axis studies. Research use only.

Research Applications

T4-to-T3 Conversion

Deiodinase enzyme activity, tissue-specific T3 production, substrate kinetics

Thyroid Receptor Pharmacology

TRα vs TRβ selectivity, nuclear receptor binding, TRE-mediated transcription

Metabolic Rate Research

Basal metabolic rate upregulation, thermogenesis, mitochondrial uncoupling interaction

HPT Axis Research

Hypothalamic-pituitary-thyroid feedback — TSH suppression, TRH regulation

Cardiac Thyroid Research

TRα-mediated cardiac chronotropy, myosin heavy chain isoform switching

Quick Specs

Form Raw bulk powder (crystalline/amorphous)
Purity ≥99% by HPLC — every batch
CAS Number 51-48-9
Molecular Formula C₁₅H₁₁I₄NO₄, MW 776.9
Identity MS molecular weight confirmed — every batch
Compound Type Thyroid Hormone / TR Agonist
COA Janoshik-independent, publicly verifiable
Manufacture In-house synthesis — Qingdao, China
Storage Room temperature sealed | cool, dry storage
Shelf Life 24 months (unopened)

Certificate of Analysis (COA)

For the latest Certificate of Analysis (COA), please email us with your request.

Frequently Asked Questions

How is this raw powder supplied?
QSC raw powder compounds are supplied as bulk crystalline or amorphous powder in a sealed, labelled container at the stated quantity. No reconstitution is required — the powder is ready for weighing and use in research applications.
How should this raw powder be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct light. Keep in the original sealed container. Properly stored raw powder remains stable for 2–3 years.
What purity is this QSC raw powder and how is it verified?
All QSC raw powder compounds are tested to ≥99% purity by HPLC on every production batch, with MS-confirmed identity. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌏 Shipping: China warehouse — 7–14 day global delivery
🧬 PubMed Research — T4
Search PubMed ↗

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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