1-(2-Pyridinylsulfonyl)-1H-benzotriazole
1-(2-Pyridinylsulfonyl)-1H-benzotriazole (CAS 678173-42-7) is a crystalline benzotriazole building block with molecular formula C11H8N4O2S and a molar mass of 260.27 g/mol. In this N-sulfonylbenzotriazole the benzotriazole nitrogen carries a pyridine-2-sulfonyl group, giving a bench-stable, easily handled sulfonyl-transfer reagent. Tech Serve Solutions supplies it as a research-grade heterocyclic intermediate for chemical synthesis and as a specialist supplier, manufacturer and exporter to laboratories worldwide.
- Synonyms
- 1-(2-Pyridinylsulfonyl)-1H-benzotriazole1-(Pyridine-2-sulfonyl)-1H-1,2,3-benzotriazole1-(2-Pyridylsulfonyl)benzotriazole2-(1H-Benzotriazol-1-ylsulfonyl)pyridineCAS 678173-42-7MFCD05149029
Heterocyclic building block
Used as a benzotriazole-derived building block in chemical synthesis and methodology work, where the benzotriazole acts as an activating and leaving group. It supports the construction of more complex nitrogen- and sulfur-containing molecules.
Sulfonyl-transfer reagent
As an N-sulfonylbenzotriazole it can serve as a stable source of the pyridine-2-sulfonyl group for sulfonylation reactions. Such reagents are valued for being easy to weigh and handle compared with the corresponding sulfonyl chlorides.
Research and discovery chemistry
Suitable for exploratory and medicinal-chemistry research as an intermediate and reagent. It is intended for laboratory-scale synthesis by trained chemists.
Reference and analytical use
The defined assay and melting range make it usable as a characterised intermediate for method development and comparative studies. It is supplied for research applications only.
| Molecular weight | 260.27 |
|---|---|
| Empirical formula | C11H8N4O2S |
| Assay | 97% |
| Melting point | 136-140 °C(lit.) |
Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1-(2-Pyridinylsulfonyl)-1H-benzotriazole used for?
+
It is used mainly as a heterocyclic building block and sulfonyl-transfer reagent in organic and medicinal-chemistry research. The benzotriazole unit acts as an activating, bench-stable handle, allowing the pyridine-2-sulfonyl group to be introduced under controlled laboratory conditions. Tech Serve Solutions supplies it for research and synthesis use only.
What is the CAS number and molecular formula of 1-(2-Pyridinylsulfonyl)-1H-benzotriazole?
+
Its CAS number is 678173-42-7 and its molecular formula is C11H8N4O2S, corresponding to a molecular weight of 260.27 g/mol. The MDL number is MFCD05149029, and the reported melting point is 136-140 °C (literature).
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this compound at a typical assay of 97% as a research/technical-grade heterocyclic building block. We do not represent it as USP, BP or EP pharmacopoeial grade. A certificate of analysis can be provided with each batch on request.
What are the safety and handling requirements?
+
The material is classified under GHS07 with the signal word Warning. Hazard statements are H302 (harmful if swallowed), H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Handle with gloves, eye protection and an N95-type dust mask, avoid dust formation, and follow precautions P261 and P305+P351+P338. It is assigned WGK 3 (water hazard) in Germany; consult the SDS before use.
How is 1-(2-Pyridinylsulfonyl)-1H-benzotriazole packed, shipped and exported?
+
It is packed as a solid in tightly closed, labelled containers sized to the order, from gram quantities upward, with full GHS labelling and an accompanying safety data sheet. As a specialist exporter, Tech Serve Solutions arranges compliant documentation and international dispatch to laboratories and manufacturers worldwide.
How do I request a sample or quote?
+
Contact Tech Serve Solutions with your required quantity, packaging and destination, and our team will respond with availability, lead time and shipping options. Samples and certificates of analysis can be arranged on request to support evaluation.
▶ Related products
1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis
1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis