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5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one is a heterocyclic compound characterized by a 1,2,4-triazole core structure, with a pyridine ring attached at the 5-position. This molecule is known for its potential applications in various fields, including pharmaceuticals and materials science. The compound is synthesized through a cyclization reaction involving a hydrazine derivative and a nitrile, leading to the formation of the triazole ring. Its chemical structure features a nitrogen atom at the 3-position, which is part of a hydroxyl group, indicating the presence of a tautomeric equilibrium. The compound's properties, such as its reactivity and potential to form complexes, make it a subject of interest for further research and development in chemistry and related disciplines.

939-08-2

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Basic information
1. Product Name: 5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one
2. Synonyms: 5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one;5-Pyridin-4-yl-2,4-dihydro-[1,2,4]triazol-3-one;3-(Pyridin-4-yl)-1H-1,2,4-triazol-5(4H)-one
3. CAS NO:939-08-2
4. Molecular Formula: C7H6N4O
5. Molecular Weight: 162.15
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 939-08-2.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: 508.9°C at 760 mmHg
3. Flash Point: 261.6°C
4. Appearance: /
5. Density: 1.55g/cm³
6. Vapor Pressure: 5.59E-11mmHg at 25°C
7. Refractive Index: 1.756
8. Storage Temp.: 2-8°C
9. Solubility: N/A
10. CAS DataBase Reference: 5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one(CAS DataBase Reference)
11. NIST Chemistry Reference: 5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one(939-08-2)
12. EPA Substance Registry System: 5-(4-Pyridyl)-1H-1,2,4-triazol-3(2H)-one(939-08-2)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 939-08-2(Hazardous Substances Data)

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939-08-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 939-08-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,3 and 9 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 939-08:
(5*9)+(4*3)+(3*9)+(2*0)+(1*8)=92
92 % 10 = 2
So 939-08-2 is a valid CAS Registry Number.

InChI:InChI=1/C7H6N4O/c12-7-9-6(10-11-7)5-1-3-8-4-2-5/h1-4H,(H2,9,10,11,12)

939-08-2SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name	5-pyridin-4-yl-1,2-dihydro-1,2,4-triazol-3-one

1.2 Other means of identification

Product number	-
Other names	Pyridine,4-(3-hydroxy-4H-1,2,4-triazol-5-yl)

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number	-
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:939-08-2 SDS

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