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1H-Tetrazole

CAS Number
288-94-8
EC Number
206-023-4
Chemical Formula
CH2N4
Molecular Weight
70.05 g/mol

Description

1H-Tetrazole (CAS 288-94-8 ), also referred to as 1,2,3,4-tetrazole, is a nitrogen-rich heterocyclic building block used across pharmaceutical synthesis, agrochemical development, and specialty chemical manufacturing. Its high nitrogen content and bioisosteric properties make it a target intermediate for drug discovery programs and crop protection research. In pharmaceutical development, it functions as a carboxylic acid bioisostere. This enables medicinal chemists to modify drug candidates for improved metabolic stability and membrane permeability without altering core pharmacological activity. Agrochemical formulators incorporate it as a synthetic intermediate. It is used in the production of fungicides and herbicides where specific heterocyclic scaffolds are required. In polymer chemistry, tetrazole derivatives act as photoactivatable crosslinkers and polymerization initiators. These derivatives support the production of specialty polymers and photoresist materials. Biotechnology researchers also use it as a coupling reagent in oligonucleotide synthesis for automated DNA/RNA assembly. It activates phosphoramidite monomers during the assembly process. 1H-Tetrazole is supplied as a white to off-white crystalline powder and is available in research-grade and technical-grade specifications. High-purity lots (≥98–99%) are commonly offered to meet pharmaceutical intermediate and synthesis requirements. Packaging ranges from gram-scale quantities for laboratory use to kilogram batches for procurement. Contact us for supply of 1H-Tetrazole Request Quote

Other Names (Synonyms)

1,2,3,4-tetrazole | D34J7PAT68 | RefChem:79967 | 2H-Tetrazole | 2,3,4-Triazapyrrole | PROVICHEM 083

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point157 °C
Boiling Point220°C
Density1.65 g/cm³
Flash Point5 °C
Appearancewhite crystals or crystalline powder
ColorCream to orange
FormLiquid
Water SolubilitySoluble
Refractive Indexn 20/D 1.348

Safety & Handling

Danger
GHS01· ExplosiveGHS03· OxidizerGHS07· Irritant

Hazard Statements

H201Explosive; mass explosion hazard
H272May intensify fire; oxidizer
H315Causes skin irritation
H319Causes serious eye irritation

Precautionary Statements

P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P220Keep away from clothing and other combustible materials.
P230Keep wetted with…
P240Ground and bond container and receiving equipment.
P250Do not subject to grinding/shock/…/friction.
P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P372Explosion risk.
P373DO NOT fight fire when fire reaches explosives.
P401Store in accordance with … .
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P380Evacuate area.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29339900
UN Number1993
ADR Class3
Packing GroupII
Storage Class3 - Flammable liquids
WGK (Germany)3