IUPAC Name: 3-Hydroxytriazolo[4,5-b]pyridine
Molecular formula: C5H4N4O
Molecular Weight: 136.11 g/mol
storage temp.: Store at RT.
Melting point: 213-216 °C
Flash Point: 181.7 °C
Density: 1.74 g/cm3
Index of Refraction: 1.836
Molar Refractivity: 34.45 cm3
Molar Volume: 78 cm3
Decomposition: 213-216 °C
Surface Tension: 84.8 dyne/cm
Enthalpy of Vaporization: 64.9 kJ/mol
Boiling Point: 376.8 °C at 760 mmHg
Vapour Pressure: 3.25E-06 mmHg at 25 °C
Appearance: Clear, colorless liquid
Product Categories of 1-Hydroxy-7-azabenzotriazole (CAS NO.39968-33-7): Peptide coupling agents; Heterocycles; PROTECTED AMINO ACID & PEPTIDES; Peptide Coupling Reagents; Heterocyclic Compounds; Peptide;Bases & Related Reagents; Nucleotides
1-Hydroxy-7-azabenzotriazole (CAS NO.39968-33-7) is a triazole used as a peptide coupling reagent. It suppresses the loss of chirality.
Hazard Codes of 1-Hydroxy-7-azabenzotriazole (CAS NO.39968-33-7): T, Xi,Xn, E ,F
Risk Statements:
R2: Risk of explosion by shock, friction, fire or other sources of ignition
R5: Heating may cause an explosion
R11: Highly Flammable
R22: Harmful if swallowed
R36: Irritating to the eyes
R41: Risk of serious damage to eyes
R61: May cause harm to the unborn child
R20/21: Harmful by inhalation and in contact with skin
R37/38: Irritating to respiratory system and skin
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements:
S16: Keep away from sources of ignition - No smoking
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S35: This material and its container must be disposed of in a safe way
S36: Wear suitable protective clothing
S39: Wear eye/face protection
S45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
S53: Avoid exposure - obtain special instruction before use
RIDADR: UN 1993 3/PG 3
WGK Germany: 1
Hazard Note: Irritant
1-Hydroxy-7-azabenzotriazole , its cas register number is 39968-33-7. It also can be called Hoat [1-hydroxy-7-azabenzotriazole] ; 1-Hydroxy-7-azabenzotriazole99%puriss ; 3h-1,2,3-Triazolo[4,5-b]pyridine, 3-hydroxy- ; 3h-[1,2,3]-Triazolo[4,5-b]pyridin-3-ol ; 7-aza-1-Hydroxybenzotriazole ; Hoat ; and 1-hydroxy-7-azabenzotriazole solution, 0.5m in dmf .
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