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Sigma-Aldrich

Methyl-1H-1,2,4-triazole-3-carboxylate

98%

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About This Item

Empirical Formula (Hill Notation):
C4H5N3O2
CAS Number:
4928-88-5
Molecular Weight:
127.10
MDL number:
MFCD00135989
UNSPSC Code:
12352100
PubChem Substance ID:
24877742
NACRES:
NA.22

Assay

98%

mp

196-199 °C (lit.)

SMILES string

COC(=O)c1nc[nH]n1

InChI

1S/C4H5N3O2/c1-9-4(8)3-5-2-6-7-3/h2H,1H3,(H,5,6,7)

InChI key

QMPFMODFBNEYJH-UHFFFAOYSA-N

Related Categories

General description

Methyl-1H-1,2,4-triazole-3-carboxylate can be synthesized from 5-amino-1,2,4-triazole-3-carboxylic acid via esterification with methanol. It is utilized as precursor for preparing the nucleoside analogue, Ribavirin. The crystal structure of methyl-1H-1,2,4-triazole-3-carboxylate has been analyzed.

Application

Methyl-1H-1,2,4-triazole-3-carboxylate (1,2,4-Triazole-3-methylcarboxylate) may be used in the preparation of 1H-1,2,4-triazole-3-carbohydrazide.
It may also be used in the synthesis of the following nucleoside analogues:
  • 1-(2,2-dimethyl-6-trityloxymethyl-4,6a-dihydro-3aH-cyclopenta-[1,3]dioxol-4-yl)-1H-1,2,4-triazole-3-carboxylic acid methyl ester
  • methyl 4,6-O-benzylidene-2-(methyl 1H-1,2,4-triazol-1-yl-3-carboxylate)-2-deoxy-<SC>D</SC>-altrohexopyranoside
  • 1,5-anhydro-4,6-O-benzylidene-2-(methyl 1H-1,2,4-triazol-1-yl-3-carboxylate)-2-deoxy-<SC>D</SC>-altro-hexitol

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Arthur Van Aerschot et al.
Antiviral chemistry & chemotherapy, 14(1), 23-30 (2003-06-07)
Current standard therapy for the treatment of chronic infections with hepatitis C virus consists of combination therapy with (pegylated) interferon-alpha and ribavirin. 1,5-Anhydrohexitol nucleoside analogues are constrained congeners known to mimic the ribonucleoside conformation. Within this series some analogues are
Methyl 1H-1,2,4-triazole-3-carboxylate.
Guo XH and Wang QX.
Acta Crystallographica Section E, Structure Reports Online, 61(10), o3217-o3218 (2005)
Dinuclear, Tetranuclear and Chain (MnII, CoII) Complexes of Multifunctional Hydrazone Ligands?Structural and Magnetic Studies.
Bettle PJ, et al.
European Journal of Inorganic Chemistry, 2011(32), 5036-5042 (2011)
Jong Hyun Cho et al.
Journal of medicinal chemistry, 49(3), 1140-1148 (2006-02-03)
A practical and convenient methodology for the synthesis of chiral cyclopentenol derivative (+)-12a has been developed as the key intermediate that was utilized for the synthesis of biologically active carbocyclic nucleosides. The selective protection of allylic hydroxyl group followed by

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