Suzhou Pharmaceutical Technology Co., Ltd. (China) supplies L-Liothyronine API CAS 6893-02-3 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> L-Liothyronine API — Overview
L-Liothyronine (CAS: 6893-02-3, also known as liothyronine, triiodothyronine, T3, 3,3′,5-triiodo-L-thyronine, L-triiodothyronine, and liotironina) is a thyroid-hormone API used in endocrine formulation, analytical-development, and research programs where local regulations permit. Suzhou Pharmaceutical Technology Co., Ltd. supplies L-Liothyronine API in controlled small-batch and bulk quantities from Suzhou, China, with export to South America, Australia, New Zealand, Mexico, Canada, and worldwide markets. Export documentation: COA and MSDS standard for all orders.
| Product Name | L-Liothyronine |
| Structural Formula |  |
| Alias | Liothyronine; Triiodothyronine; T3; 3,3′,5-triiodo-L-thyronine; L-triiodothyronine; Liotironina |
| CAS Number | 6893-02-3 |
| Molecular Formula | C15H12I3NO4 |
| Molecular Weight | 650.97 g/mol |
| Purity | Available by agreed HPLC specification |
| Appearance | White to light tan crystalline powder |
| Storage | Store sealed, protected from light and moisture |
> Applications
L-Liothyronine is used by pharmaceutical and research organizations developing thyroid-hormone formulations, reference methods, and impurity-control strategies. API supply is intended for qualified buyers who will confirm dosage form, potency controls, impurity requirements, pharmacopoeial strategy, and finished-dose registration obligations in their own markets.
Thyroid-hormone formulation research
A 2005 journal article reported a large double-blind randomized controlled trial evaluating partial substitution of thyroxine with triiodothyronine in patients on T4 replacement therapy (Journal of Clinical Endocrinology & Metabolism, doi:10.1210/jc.2004-1672, n=697). This supports the need for carefully controlled T3 API quality in endocrine formulation and analytical-development programs.
Analytical and impurity-control development
Buyers typically evaluate assay, related iodothyronine substances, residual solvents, water content, optical properties, particle properties, and stability behavior before moving from sample quantities to pilot or commercial batches. We supply API only, not finished tablets, injectable products, compounded preparations, or branded medicines.
> Sourcing & Supply
Suzhou Pharmaceutical Technology Co., Ltd. is an R&D-driven pharmaceutical company with in-house synthesis and analytical capability for L-Liothyronine API. Small batches (up to 10 kg) are produced directly by our technical team in Suzhou. For larger commercial quantities, production is scaled up at qualified manufacturing facilities, with export documentation provided according to the order scope.
- Small-batch orders (≤10 kg): prepared by our technical team in Suzhou. Lead time 10–14 business days from order confirmation.
- Commercial bulk (>10 kg): scaled up at qualified manufacturing facilities. Lead time 14–21 business days depending on batch size and documentation.
We export L-Liothyronine API to buyers across South America — including Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay — as well as to Australia, New Zealand, Mexico, and Canada. Inquiries from European, Middle Eastern, and Asian markets are also welcome.
> Quality & Export Documentation
All L-Liothyronine shipments are accompanied by a Certificate of Analysis (COA) confirming identity, appearance, assay, and related substances against batch specification. Purity is tested by HPLC against an authenticated reference standard. MSDS is provided for all orders, and Certificate of Origin (COO) is available for commercial bulk shipments.
| Order size | Documentation included |
| ≤10 kg (small-batch / research) | COA + MSDS |
| >10 kg (commercial bulk) | COA + MSDS + COO |
> Packaging & Logistics
- 10 g, 25 g, 100 g: amber glass bottle or double-layered aluminium foil bag, light-protected
- 500 g, 1 kg: aluminium foil bag inside kraft paper box or fibre drum
- 5 kg, 10 kg: aluminium foil bag inside fibre drum
- >10 kg: packaging agreed according to commercial order requirements
L-Liothyronine API is shipped with light- and moisture-protective packaging and batch labels matched to the COA. Shipping options include express courier for samples, air freight for kilogram orders, and sea freight for larger commercial shipments where timing allows.
> Pricing & Supply
L-Liothyronine pricing is provided on request. We do not publish list prices because the final quote depends on order quantity, purity requirement, documentation needs, shipping destination, and current raw material costs.
- MOQ: 10 g for qualified buyers
- Sample policy: 1–5 g samples available for analytical confirmation
- Bulk discount tiers apply at 25 g, 100 g, 500 g, and 1 kg
- Payment: T/T (bank transfer). 100% in advance for standard orders. Terms for larger repeat orders by arrangement.
> Frequently Asked Questions
What is the minimum order quantity for L-Liothyronine API?
The minimum order quantity for L-Liothyronine API is 10 grams. Smaller analytical samples may be available for qualified buyers.
What documents are included with an L-Liothyronine bulk order?
All L-Liothyronine orders include a COA and MSDS in English. For commercial bulk orders above 10 kg, COO is available as standard export documentation.
Can I request an L-Liothyronine sample before placing a bulk order?
Yes. Sample quantities of 1–5 g are available for qualified buyers before pilot or commercial orders.
Do you export L-Liothyronine API to South America?
Yes. We support inquiries from Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay.
Can buyers in Australia, New Zealand, Mexico, or Canada order T3?
Yes. We supply L-Liothyronine API to buyers in Australia, New Zealand, Mexico, and Canada. COA and MSDS are included with all orders.
What is L-Liothyronine used for?
L-Liothyronine is a thyroid-hormone API used in endocrine formulation, analytical-development, and research programs where local regulations allow.
Is triiodothyronine the same as L-Liothyronine?
Triiodothyronine and T3 are common names associated with L-Liothyronine, the free-acid form rather than the sodium salt.
What specification is available for L-Liothyronine CAS 6893-02-3?
L-Liothyronine is supplied by agreed HPLC specification, including assay, related iodothyronine substances, water content, and identity controls.
How is L-Liothyronine packaged and shipped internationally?
L-Liothyronine API is shipped in light-protective bottles, foil bags, or foil-lined fibre drums with protection from moisture during international transit.
Do you supply finished L-Liothyronine tablets or injections?
No. We supply L-Liothyronine API, not finished tablets, injectable products, compounded preparations, or branded medicines.
> Related Products
- Liothyronine Sodium | CAS 55-06-1 — sodium salt T3 API
- Levothyroxine Sodium | CAS 55-03-8 — thyroid hormone API
- Methylcobalamin | CAS 13422-55-4 — vitamin B12 API
- Gabapentin | CAS 60142-96-3 — neurological API
> Request a Quote or Sample
To request a quote or sample for L-Liothyronine API (CAS 6893-02-3), please contact us directly at Info@fmyykj.com.
Include in your inquiry: required quantity (grams or kg), destination country, documentation requirements (COA + MSDS standard; COO for bulk), and intended use (formulation / analytical development / research / other). We respond to all inquiries within 1 business day.
Last reviewed: June 2026