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ChemicalBook >> 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid

5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid

5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid price.
  • $65 - $1875
  • Product name: 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid
  • CAS: 4538-16-3
  • MF: C3H3N3O3
  • MW: 129.07
  • EINECS:
  • MDL Number:MFCD00526072
  • Synonyms:AKOS AU36-M362;ASINEX-REAG BAS 10142521;5-keto-1,2-dihydro-1,2,4-triazole-3-carboxylic acid;5-oxo-1,2-dihydro-1,2,4-triazole-3-carboxylic acid;1H-1,2,4-Triazole-3-carboxylic acid, 2,5-dihydro-5-oxo-;5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid
Price27 Properties Safety Information Description
27 prices
Selected condition：
Brand
  • aablocks
  • ACHEMBLOCK
  • Activate Scientific
  • AK Scientific
  • American Custom Chemicals Corporation
  • Chemenu
  • CHESS
  • Crysdot
  • J&W Pharmlab
  • Matrix Scientific
  • TRC
Package
  • 50mg
  • 100mg
  • 250mg
  • 500mg
  • 1.00g
  • 1g
  • 2.5G
  • 5g
  • 10g
  • 25g
  • Manufactureraablocks
  • Product numberAA00D99C
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96%
  • Packaging250mg
  • Price$96
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00D99C
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96%
  • Packaging1g
  • Price$235
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00D99C
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96%
  • Packaging5g
  • Price$674
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00D99C
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96%
  • Packaging10g
  • Price$990
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00D99C
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96%
  • Packaging25g
  • Price$1875
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD255821
  • Product description5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95%
  • Packaging5G
  • Price$1050
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD255821
  • Product description5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95%
  • Packaging1G
  • Price$295
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD255821
  • Product description5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95%
  • Packaging250MG
  • Price$190
  • Updated2026-05-27
  • Buy
  • ManufacturerActivate Scientific
  • Product numberAS125090
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 95%
  • Packaging1g
  • Price$162
  • Updated2026-06-04
  • Buy
  • ManufacturerActivate Scientific
  • Product numberAS125090
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 95%
  • Packaging5g
  • Price$577
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product number3908AE
  • Product description5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylicacid
  • Packaging1g
  • Price$590
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0087195
  • Product description5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00%
  • Packaging5G
  • Price$1210.63
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0087195
  • Product description5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00%
  • Packaging2.5G
  • Price$1011.6
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0087195
  • Product description5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00%
  • Packaging1G
  • Price$736.12
  • Updated2021-12-16
  • Buy
  • ManufacturerChemenu
  • Product numberCM112776
  • Product description5-oxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxylic acid 95%
  • Packaging1g
  • Price$359
  • Updated2026-05-26
  • Buy
  • ManufacturerCHESS
  • Product number1003405
  • Product descriptionKP003895:5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylicacidmonohydrate 95
  • Packaging5G
  • Price$1020
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00D99C 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96% 250mg $96 2026-05-28 Buy
aablocks AA00D99C 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96% 1g $235 2026-05-28 Buy
aablocks AA00D99C 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96% 5g $674 2026-05-28 Buy
aablocks AA00D99C 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96% 10g $990 2026-05-28 Buy
aablocks AA00D99C 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 96% 25g $1875 2026-05-28 Buy
ACHEMBLOCK AD255821 5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95% 5G $1050 2026-05-27 Buy
ACHEMBLOCK AD255821 5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95% 1G $295 2026-05-27 Buy
ACHEMBLOCK AD255821 5-Oxo-2,5-dihydro-1h-1,2,4-triazole-3-carboxylic acid 95% 250MG $190 2026-05-27 Buy
Activate Scientific AS125090 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 95% 1g $162 2026-06-04 Buy
Activate Scientific AS125090 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylic acid 95% 5g $577 2026-06-04 Buy
AK Scientific 3908AE 5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylicacid 1g $590 2021-12-16 Buy
American Custom Chemicals Corporation CHM0087195 5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00% 5G $1210.63 2021-12-16 Buy
American Custom Chemicals Corporation CHM0087195 5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00% 2.5G $1011.6 2021-12-16 Buy
American Custom Chemicals Corporation CHM0087195 5-OXO-4,5-DIHYDRO-1H-[1,2,4]TRIAZOLE-3-CARBOXYLIC ACID 95.00% 1G $736.12 2021-12-16 Buy
Chemenu CM112776 5-oxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxylic acid 95% 1g $359 2026-05-26 Buy
CHESS 1003405 KP003895:5-Oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylicacidmonohydrate 95 5G $1020 2021-12-16 Buy
Next Last

Properties

Melting point :205 °C (decomp)(Solv: water (7732-18-5))
Density :2.22±0.1 g/cm3(Predicted)
storage temp. :2-8°C, stored under nitrogen
pka :-2.21±0.20(Predicted)
Appearance :White to off-white Solid

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

5-Oxo-2,5-dihydro-1H-1,2,4-triazole-3-carboxylic Acid is used in preparation of the fused tri-cyclic compound as pde3/pde4 dual inhibitor.

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Suppliers and manufacturers

Shaanxi Dideu Medichem Co. Ltd
5-OXO-45-DIHYDRO-1H-[124]TRIAZOLE-3-CARBOXYLIC ACID
$11.00
5-OXO-45-DIHYDRO-1H-[124]TRIAZOLE-3-CARBOXYLIC ACID CAS:4538-16-3
Wuhan Chemwish Technology Co., Ltd Bide Pharmatech Ltd. JW & Y Pharmlab Co., Ltd. Changzhou Hopschain Chemical Co.,Ltd. SHANGHAI FDC-CHEMICAL CO.,LTD Shanghai Haohong Pharmaceutical Co., Ltd. Block Chemical Technology (Shanghai) Co., LTD SHAANXI?DIDEU?MEDICHEM CO.LTD Aikon International Limited