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T4 Levothyroxine 40mcg Tablets

T4 Levothyroxine 40mcg Tablets | 100-Count |Levothyroxine / T4

🌏 usa china Ships From
T4 Levothyroxine 40mcg Tablets | 100-Count — Thyroid prohormone (levothyroxine) — converted to active T3 by peripheral deiodinases; studied for thyroid replacement pharmacokinetics, deiodination pathway research, and comparative T3/T4 dynamics. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

🏠 Local shipping: 3–5 days
🌍 7–14 days

$130.00

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SKU: QSC-440-T4-40MCG-100TAB
Categories: ,
Brand: CAS Number: 51-48-9
Purity: ≥99% by HPLC — every batch Form: C₁₅H₁₁I₄NO₄

 

What is T4 Levothyroxine?

Levothyroxine (T4) is the primary secretory product of the thyroid gland — a prohormone requiring peripheral conversion to T3 (by deiodinase DIO1/DIO2) for full activity. Research: prohormone conversion biology, DIO1/DIO2 enzyme research, hypothyroid replacement models, T4/T3 axis feedback. CAS 51-48-9.

Research Applications

Prohormone Conversion

T4→T3 via DIO1/DIO2 deiodinase — peripheral thyroid activation

Deiodinase Biology

DIO1/DIO2/DIO3 substrate and enzyme research

Hypothyroid Replacement

Standard replacement model — T4 vs T4+T3 combination

Thyroid Axis Feedback

TRH/TSH/T4/T3 feedback loop regulation

T4 vs T3 Comparison

Prohormone vs active hormone — direct pharmacological comparison

 

Quick Specs

Form C₁₅H₁₁I₄NO₄
Purity ≥99% by HPLC — every batch
CAS Number 51-48-9
Molecular Weight MS molecular weight confirmed — every batch
Specification ≥99% by HPLC — every batch
Shelf Life 24 months unopened
Storage Room temperature sealed | cool, dry storage
Manufacture In-house synthesis — Qingdao, China
Brand China

Frequently Asked Questions

How do I reconstitute this peptide?
QSC research tablets are supplied as pre-dosed oral tablets at the stated concentration. No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications.
How should this peptide be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight. Keep in the original container. Properly stored tablets remain stable for 2–3 years.
What purity is this QSC compound and how is it verified?
QSC research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. 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.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
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