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ChemicalBook >> CAS DataBase List >> 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

$5 - $15100
Product name: 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy
CAS: 2226-96-2
MF: C9H18NO2*
MW: 172.24
EINECS:218-760-9
MDL Number:MFCD00006478
Synonyms:4-HYDROXY-2,2,6,6-TETRAMETHYL-PIPERIDINOOXY;4-HYDROXY-2,2,6,6-TETRAMETHYLPIPERIDINE 1-OXYL;4-HYDROXY-2,2,6,6-TETRAMETHYL-1-PIPERIDIN-1-YLOXY;4-HYDROXY-2,2,6,6-TETRAMETHYL-1-PIPERIDINYLOXY, FREE RADICAL;4-HYDROXY-2,2,6,6-TETRAMETHYL-PIPERIDINOOXY, FREE RADICAL;4-HYDROXY-2,2,6,6-TETRAMETHYLPIPERIDINYLOXY FREE RADICAL;4-HYDROXY-TEMPO, FREE RADICAL;2,2,6,6-Tetramethyl-4-hydroxypiperidine 1-oxyl

Price140 Properties Safety Information Description

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Brand

aablocks
AccelPharmtech
AHH
AK Scientific
Ambeed
American Custom Chemicals Corporation
ApexBio Technology
Apolloscientific
Arctom
AvaChem
Biorbyt Ltd
Biosynth
Cayman Chemical
Chem-Impex
ChemScene
CSNpharm
DC Chemicals
Frontier Specialty Chemicals
Matrix Scientific
Medical Isotopes, Inc.
Oakwood
Sigma-Aldrich
TCI Chemical
Thermo Scientific Chemicals
Tocris
TRC
Usbiological

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1mg
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100
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50g
100.00g
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1T
1 g
5 g
10mM(in1mLDMSO)
2.5kg
10kg
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EvaluationSample

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 95%
Packaging1mg
Price$8
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%
Packaging25g
Price$9
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%
Packaging100g
Price$16
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%
Packaging250g
Price$20
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%
Packaging500g
Price$25
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA0033ZV
Product description4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 95%
Packaging1000g
Price$35
Updated2026-05-28
Buy

ManufacturerAccelPharmtech
Product numberFB2664
Product description4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy 99.00%
Packaging1T
Price$15100
Updated2026-05-21
Buy

ManufacturerAHH
Product numberMT-15608
Product description4-Hydroxy-2,2,6,6-tetramethylpiperidinyloxy 97%
Packaging100g
Price$418
Updated2021-12-16
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ManufacturerAK Scientific
Product numberF502
Product description4-Hydroxy-TEMPO, free radical 99%(GC)
Packaging1kg
Price$388
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberJ10761
Product description4-Hydroxy-TEMPO, free radical >99%(GC)
Packaging1kg
Price$531
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberJ90801
Product description4-Hydroxy-TEMPO, free radical 98%
Packaging5kg
Price$1203
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberF502
Product description4-Hydroxy-TEMPO, free radical 99%(GC)
Packaging5kg
Price$1732
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberJ10761
Product description4-Hydroxy-TEMPO, free radical >99%(GC)
Packaging5kg
Price$2372
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberF502
Product description4-Hydroxy-TEMPO, free radical 99%(GC)
Packaging250g
Price$106
Updated2026-06-04
Buy

ManufacturerAK Scientific
Product numberJ10761
Product description4-Hydroxy-TEMPO,freeradical
Packaging250g
Price$108
Updated2021-12-16
Buy

ManufacturerAK Scientific
Product numberJ90801
Product description4-Hydroxy-TEMPO, free radical 98%
Packaging500g
Price$139
Updated2026-06-04
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 95%	1mg	$8	2026-05-28	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%	25g	$9	2026-05-28	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%	100g	$16	2026-05-28	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%	250g	$20	2026-05-28	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 98%	500g	$25	2026-05-28	Buy
aablocks	AA0033ZV	4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy 95%	1000g	$35	2026-05-28	Buy
AccelPharmtech	FB2664	4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy 99.00%	1T	$15100	2026-05-21	Buy
AHH	MT-15608	4-Hydroxy-2,2,6,6-tetramethylpiperidinyloxy 97%	100g	$418	2021-12-16	Buy
AK Scientific	F502	4-Hydroxy-TEMPO, free radical 99%(GC)	1kg	$388	2026-06-04	Buy
AK Scientific	J10761	4-Hydroxy-TEMPO, free radical >99%(GC)	1kg	$531	2026-06-04	Buy
AK Scientific	J90801	4-Hydroxy-TEMPO, free radical 98%	5kg	$1203	2026-06-04	Buy
AK Scientific	F502	4-Hydroxy-TEMPO, free radical 99%(GC)	5kg	$1732	2026-06-04	Buy
AK Scientific	J10761	4-Hydroxy-TEMPO, free radical >99%(GC)	5kg	$2372	2026-06-04	Buy
AK Scientific	F502	4-Hydroxy-TEMPO, free radical 99%(GC)	250g	$106	2026-06-04	Buy
AK Scientific	J10761	4-Hydroxy-TEMPO,freeradical	250g	$108	2021-12-16	Buy
AK Scientific	J90801	4-Hydroxy-TEMPO, free radical 98%	500g	$139	2026-06-04	Buy

Next Last

Properties

Melting point :69-71 °C(lit.)
Boiling point :302.58°C (rough estimate)
Density :1.0402 (rough estimate)
vapor pressure :0.025Pa at 20℃
refractive index :1.4350 (estimate)
Flash point :146°(295°F)
storage temp. :2-8°C
solubility :1670g/l
form :Crystals or Crystalline Powder
pka :5.07[at 20 ℃]
color :Orange
PH :8.2 (20g/l, H2O, 20℃)
Water Solubility :soluble
Merck :14,9141
BRN :1422990
Henry's Law Constant :3.3×10⁹ mol/(m³Pa) at 25℃, HSDB (2015)
Stability :Stable. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions :ANTIOXIDANT
InChI :1S/C9H18NO2/c1-8(2)5-7(11)6-9(3,4)10(8)12/h7,11H,5-6H2,1-4H3
InChIKey :FAPCFNWEPHTUQK-UHFFFAOYSA-N
SMILES :CC1(C)CC(O)CC(C)(C)N1[O]
LogP :0.56 at 25℃
CAS DataBase Reference :2226-96-2(CAS DataBase Reference)
NIST Chemistry Reference :1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-(2226-96-2)
EPA Substance Registry System :1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl- (2226-96-2)

Safety Information

Symbol(GHS):

Signal word:

Danger

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
H318	Causes serious eye damage	Serious eye damage/eye irritation	Category 1	Danger		P280, P305+P351+P338, P310

Precautionary statements:

P264	Wash hands thoroughly after handling.
P264	Wash skin thouroughly after handling.
P270	Do not eat, drink or smoke when using this product.
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.
P305+P351+P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P501	Dispose of contents/container to..…

Description

Superoxide scavenger with neuroprotective, anti-inflammatory and analgesic effects4-Hydroxy-TEMPO free radical is used as a catalyst and a chemical oxidant by virtue of being a stable radical. It is used for detoxifying reactive oxygen species in medicinal chemistry. It is involved in the catalysis of disproportionation of superoxide and facilitates hydrogen peroxide metabolism. It is used to prepare tris(2,2,6,6-tetramethyl-1-oxyl-4-piperidyloxy)trimellitate by reacting with benzene-1,2,4-tricarbonyl trichloride. Further, it is used as a free radical scavenger and exhibits neuroprotective, anti-inflammatory and analgesic effects. In addition to this, it has good inhibition effect to acrylic acid esters, methyl acrylate, acrylic acid, acrylonitrile, styrene and butadiene.

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Suppliers and manufacturers

Jiangxi Lotchem Co.,Ltd.

Inhibitor 701 CAS:2226-96-2

Jinan Finer Chemical Co., Ltd

$3.00
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

Nantong Provichem Biotech Co., Ltd.

$10.00
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

Hebei Chuanghai Biotechnology Co., Ltd

$1.00
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

Hebei Chuanghai Biotechnology Co,.LTD

$1.90
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

Yujiang Chemical (Shandong) Co.,Ltd.

$3.50
Tempol CAS:2226-96-2

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD

$66.00
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

Hebei Zhuanglai Chemical Trading Co Ltd

$10.00
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2

ZHEJIANG ESTCHEM CO.,LTD

Capot Chemical Co.,Ltd.

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4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

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