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530352

Sigma-Aldrich

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

98%

Empirical Formula (Hill Notation):
C4H5N3O2
CAS Number:
Molecular Weight:
127.10
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

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

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.[1]

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.[2]
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[3]
  • methyl 4,6-O-benzylidene-2-(methyl 1H-1,2,4-triazol-1-yl-3-carboxylate)-2-deoxy-<SC>D</SC>-altrohexopyranoside[4]
  • 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[4]

Packaging

25 g in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

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

Certificate of Analysis

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Certificate of Origin

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