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ChemicalBook >> CAS DataBase List >> 3-Methylisothiazole-5-carboxylic acid

3-Methylisothiazole-5-carboxylic acid

3-Methylisothiazole-5-carboxylic acid price.
  • $55 - $5364.98
  • Product name: 3-Methylisothiazole-5-carboxylic acid
  • CAS: 66975-83-5
  • MF: C5H5NO2S
  • MW: 143.16
  • EINECS:
  • MDL Number:MFCD11110341
  • Synonyms:3-Methylisothiazole-5-carboxylic acid;5-Isothiazolecarboxylicacid, 3-methyl-;3-methyl-1,2-thiazole-5-carboxylic acid
Price26 Properties Safety Information Description
26 prices
Selected condition：
Brand
  • aablocks
  • Acints
  • Activate Scientific
  • Advanced Chemicals Intermediat
  • AK Scientific
  • Alichem
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Arctom
  • Crysdot
  • Matrix Scientific
  • SynQuest Laboratories
Package
  • 25mg
  • 50mg
  • 100mg
  • 250mg
  • 500mg
  • 1g
  • 5g
  • Manufactureraablocks
  • Product numberAA00FCKE
  • Product description3-methyl-1,2-thiazole-5-carboxylic acid 95%
  • Packaging100mg
  • Price$248
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00FCKE
  • Product description3-methyl-1,2-thiazole-5-carboxylic acid 95%
  • Packaging250mg
  • Price$397
  • Updated2026-05-28
  • Buy
  • ManufacturerAcints
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging500mg
  • Price$436.05
  • Updated2026-05-20
  • Buy
  • ManufacturerAcints
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging1g
  • Price$697.95
  • Updated2026-05-20
  • Buy
  • ManufacturerAcints
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging5g
  • Price$2351.7
  • Updated2026-05-20
  • Buy
  • ManufacturerActivate Scientific
  • Product numberAS68811
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%
  • Packaging1g
  • Price$522
  • Updated2026-06-04
  • Buy
  • ManufacturerAdvanced Chemicals Intermediat
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging500mg
  • Price$436.05
  • Updated2026-05-19
  • Buy
  • ManufacturerAdvanced Chemicals Intermediat
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging5g
  • Price$2351.7
  • Updated2026-05-19
  • Buy
  • ManufacturerAdvanced Chemicals Intermediat
  • Product numberACI-00537
  • Product description3-Methyl-isothiazole-5-carboxylic acid 95%+
  • Packaging1g
  • Price$697.95
  • Updated2026-05-19
  • Buy
  • ManufacturerAK Scientific
  • Product number7851AE
  • Product description3-Methyl-isothiazole-5-carboxylicacid
  • Packaging100mg
  • Price$341
  • Updated2021-12-16
  • Buy
  • ManufacturerAlichem
  • Product number66975835
  • Product description3-Methylisothiazole-5-carboxylicacid
  • Packaging1g
  • Price$795.3
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0152513
  • Product description3-METHYLISOTHIAZOLE-5-CARBOXYLIC ACID 95.00%
  • Packaging1G
  • Price$2881.73
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0152513
  • Product description3-METHYLISOTHIAZOLE-5-CARBOXYLIC ACID 95.00%
  • Packaging5G
  • Price$5364.98
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR346142
  • Product description3-Methyl-isothiazole-5-carboxylic acid ≥95%
  • Packaging1g
  • Price$985
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR346142
  • Product description3-Methyl-isothiazole-5-carboxylic acid ≥95%
  • Packaging25mg
  • Price$55
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR346142
  • Product description3-Methyl-isothiazole-5-carboxylic acid ≥95%
  • Packaging500mg
  • Price$617
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00FCKE 3-methyl-1,2-thiazole-5-carboxylic acid 95% 100mg $248 2026-05-28 Buy
aablocks AA00FCKE 3-methyl-1,2-thiazole-5-carboxylic acid 95% 250mg $397 2026-05-28 Buy
Acints ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 500mg $436.05 2026-05-20 Buy
Acints ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 1g $697.95 2026-05-20 Buy
Acints ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 5g $2351.7 2026-05-20 Buy
Activate Scientific AS68811 3-Methyl-isothiazole-5-carboxylic acid 95% 1g $522 2026-06-04 Buy
Advanced Chemicals Intermediat ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 500mg $436.05 2026-05-19 Buy
Advanced Chemicals Intermediat ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 5g $2351.7 2026-05-19 Buy
Advanced Chemicals Intermediat ACI-00537 3-Methyl-isothiazole-5-carboxylic acid 95%+ 1g $697.95 2026-05-19 Buy
AK Scientific 7851AE 3-Methyl-isothiazole-5-carboxylicacid 100mg $341 2021-12-16 Buy
Alichem 66975835 3-Methylisothiazole-5-carboxylicacid 1g $795.3 2021-12-16 Buy
American Custom Chemicals Corporation CHM0152513 3-METHYLISOTHIAZOLE-5-CARBOXYLIC ACID 95.00% 1G $2881.73 2021-12-16 Buy
American Custom Chemicals Corporation CHM0152513 3-METHYLISOTHIAZOLE-5-CARBOXYLIC ACID 95.00% 5G $5364.98 2021-12-16 Buy
Apolloscientific OR346142 3-Methyl-isothiazole-5-carboxylic acid ≥95% 1g $985 2026-06-04 Buy
Apolloscientific OR346142 3-Methyl-isothiazole-5-carboxylic acid ≥95% 25mg $55 2026-06-04 Buy
Apolloscientific OR346142 3-Methyl-isothiazole-5-carboxylic acid ≥95% 500mg $617 2026-06-04 Buy
Next Last

Properties

Melting point :206 °C (decomp)
Boiling point :187.8±33.0 °C(Predicted)
Density :1.418±0.06 g/cm3(Predicted)
pka :1.30±0.10(Predicted)
form :solid
color :Beige

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
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,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
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
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.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
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.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P330 Rinse mouth.
P332+P313 IF SKIN irritation occurs: Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P362 Take off contaminated clothing and wash before reuse.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

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Suppliers and manufacturers

Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. Amadis Chemical Company Limited Yujinpharma(Tianjin) Technology Co.,Ltd. Guangzhou Yuheng Pharmaceutical Technology Co., Ltd Taizhou Nanfeng Pharmaceutical Research Institute Block Chemical Technology (Shanghai) Co., LTD Taizhou Chuanxu Pharmaceutical Technology Co., Ltd. Nantong Xinqisheng Biotechnology Co., Ltd.