Tosyl azide
Synonym(s):p-Toluenesulfonazide solution;4-Methylbenzenesulfonyl azide solution;Tosyl azide solution
- CAS NO.：941-55-9
- Empirical Formula: C7H7N3O2S
- Molecular Weight: 197.21
- MDL number: MFCD00180767
- EINECS: 213-381-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:24:12
What is Tosyl azide?
Chemical properties
Colorless to slight yellow liquid
The Uses of Tosyl azide
Used for the introduction of azide and diazo functional groups. It is also used as a nitrene source and as a substrate for [3+2] cycloaddition reactions.
The Uses of Tosyl azide
4-Methylbenzenesulfonyl Azide can be used to target Bcl-2 family proteins to potentially treat cancer.
The Uses of Tosyl azide
p-Toluenesulfonyl azide solution can be employed as a reagent along with alkyne, and amine in the three-component coupling reaction for the synthesis of N-sulfonylamidines in presence of copper catalyst.
It can also be used in the synthesis of N-sulfonyl-1,2,3-triazoles by azide-alkyne cycloaddition reaction in the presence of copper catalyst.
Synthesis Reference(s)
Synthetic Communications, 17, p. 1015, 1987 DOI: 10.1080/00397918708063962
Tetrahedron Letters, 28, p. 5091, 1987 DOI: 10.1016/S0040-4039(00)95598-9
Properties of Tosyl azide
| Melting point: | 22 °C |
| Density | ~0.90 g/mL at 20 °C |
| refractive index | n20/D 1.548 |
| Flash point: | 4℃ |
| storage temp. | 2-8°C |
| EPA Substance Registry System | Benzenesulfonyl azide, 4-methyl- (941-55-9) |
Safety information for Tosyl azide
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H300:Acute toxicity,oral H304:Aspiration hazard H315:Skin corrosion/irritation H336:Specific target organ toxicity,single exposure; Narcotic effects H373:Specific target organ toxicity, repeated exposure H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Tosyl azide
| InChIKey | NDLIRBZKZSDGSO-UHFFFAOYSA-N |
Tosyl azide manufacturer
NSR Amino Organics
1Y
Phone:+91-9866989891
Whatsapp: +91-9866989891
product: 941-55-9 P-Toluenesulfonyl Azide(Tosyl Azide) 98%
SAKEM LLP
1Y
Phone:+91-9676889998
Whatsapp: +91-9676889998
product: P-Toluene Sulphonyl Azide-Bulk 98%
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