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Introduction

The chemical registered under CAS No. 768-66-1 is formally known as 2,2,6,6‑Tetramethylpiperidine (also sometimes abbreviated TMP or HTMP).
It is a hindered amine base, used in a variety of chemical applications (for example in synthesis, as a reagent, as a building block).
Because of its utility, there are a number of manufacturers and suppliers worldwide whose business is to produce and supply this compound at various purities and for various industries.

Key chemical properties

Before discussing manufacturers, here are some key details about the compound:

• Molecular formula: C₉H₁₉N.
  
  

• Molecular weight: ~141.25 g/mol.
  
  

• Appearance: a colourless to light yellow liquid.
  
  

• Other data: Boiling point around 152–153 °C.
  
  

• Common uses: as a base in organic synthesis, as an intermediate or reagent.
  
  

These characteristics mean any manufacturer must ensure quality, purity, and appropriate packaging/handling (especially given it is flammable/hazardous). For example one supplier lists hazard codes: Xn, F, C and risk statements 10-22-36/37/38. 

Prominent manufacturers & suppliers

Here are several companies (primarily in China, but also other regions) noted for manufacturing or supplying 2,2,6,6-Tetramethylpiperidine (CAS 768-66-1).

1. Nanjing Liskon Biological Technology Co., Ltd. (China)

Located in Nanjing, Jiangsu Province, China.
They list 2,2,6,6-Tetramethylpiperidine (TMP) as part of their product portfolio, with annual capacity claims, and stock status.
Why this company stands out: They appear to position themselves as a “high-tech enterprise focusing on chemical development, production, sales, import & export”.
Tip for buyers: You may wish to request their Certificate of Analysis (COA), check for purity (they mention min. 99.0% in a product sheet) and confirm shipping/packaging terms. 

2. Shanghai Minstar Chemical Co., Ltd. (China)

Based in Shanghai.
They list CAS 768-66-1 among their offered products, with details: “Min.Order: 1 Gram”, “Purity: 98%” etc.
Why this company is relevant: For customers needing small-scale supply or sample quantities, this company seems set up for smaller MOQs (minimum orders) and offers distribution/export possibilities.
Tip: If you are in India (or neighbouring regions), check shipping costs, customs/import considerations, and whether the batches are certified for your intended use.

3. Hangzhou Longchang Bio‑chemical Co., Ltd. (China)

Located in Shandong Province (Weifang / Changyi City).
They describe this compound, its specification (Assay ≥98.5%), packaging (160kg drum), usage (catalysts & chemical auxiliary agents).
Why worth noting: They appear to handle mid-to-large scale bulk packaging, which might suit industrial users.
Tip: For large orders, check lead time, shipping mode (sea vs air), storage conditions (since it is a flammable/hazardous liquid) and documentation (MSDS, SDS, export license).

4. SETV Global (India)

While many manufacturers are China-based, this company based in India is cited as an API/intermediate producer of 2,2,6,6-Tetramethylpiperidine.
Why this matters: For buyers in India or nearby, sourcing domestically (or closer) can reduce import complexity/taxes/delays.
Tip: Verify manufacturing certifications (e.g., GMP, US FDA compliance if needed), check for local regulatory approval, quality control measures.

Considerations when sourcing CAS 768-66-1

When you are looking to purchase 2,2,6,6-Tetramethylpiperidine, here are some practical aspects to keep in mind:

• Purity & certificate: Make sure the grade/purity (e.g., 98%, 99%, etc) is suitable for your application (research, fine chemical, industrial).
  
  

• Documentation: Request the COA (Certificate of Analysis), MSDS/SDS (Safety Data Sheet), possibly supply chain traceability.
  
  

• Packaging & storage: Given its properties (liquid, flammable, possibly air-sensitive) check packaging (drums, small bottles), storage/transport conditions (cool, dry, ventilated). For example one listing says “Store below +30 °C”.
  
  

• Regulatory/import compliance: Especially important if you are importing into India (or shipping overseas). Check customs, hazardous goods transport (UN 1992 appears as the ADR/UN number in one supplier sheet).
  
  

• Lead time & MOQ (Minimum Order Quantity): Manufacturers differ — some allow small orders (grams) for R&D; others are geared for bulk drums (100 kg+).
  
  

• Cost & logistics: Consider freight, packaging, handling of hazardous chemicals, insurance, potential duties/taxes.
  
  

• Application relevance: Ensure that the manufacturer’s specification matches your use case (fine chemical research vs industrial scale).
  
  

• Quality assurance and reputation: Especially if you require high-purity material for pharmaceutical intermediates or fine chemicals, check for certifications, audits, supply history.
  
  

Conclusion

2,2,6,6-Tetramethylpiperidine (CAS 768-66-1) is a specialty chemical with several established manufacturers and suppliers, especially in China (and some in India). By understanding the chemical’s properties, the sourcing landscape, and the important criteria for purchasing (purity, documentation, packaging, logistics, regulatory compliance), you as a buyer can make more informed decisions.