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ChemicalBook >> CAS DataBase List >> 2,2,5,5-TETRAMETHYL-3-PYRROLIN-1-OXYL-3-CARBOXYLIC ACID N-HYDROXYSUCCINIMIDE ESTER

2,2,5,5-TETRAMETHYL-3-PYRROLIN-1-OXYL-3-CARBOXYLIC ACID N-HYDROXYSUCCINIMIDE ESTER

2,2,5,5-TETRAMETHYL-3-PYRROLIN-1-OXYL-3-CARBOXYLIC ACID N-HYDROXYSUCCINIMIDE ESTER price.
  • $90.65 - $1644
  • Product name: 2,2,5,5-TETRAMETHYL-3-PYRROLIN-1-OXYL-3-CARBOXYLIC ACID N-HYDROXYSUCCINIMIDE ESTER
  • CAS: 37558-29-5
  • MF: C13H17N2O5*
  • MW: 281.28
  • EINECS:
  • MDL Number:MFCD00066369
  • Synonyms:OXYL-1-NHS;1h-pyrrol-1-yloxy,3-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-2,5-dihydro-2,2, ;5-tetramethyl- ;1-OXYL-2,2,5,5-TETRAMETHYLPYRROLINE-3-CARBOXYLATE N-HYDROXYSUCCINIMIDE ESTER;2,2,5,5-TETRAMETHYL-3-PYRROLIN-1-OXYL-3-CARBOXYLIC ACID N-HYDROXYSUCCINIMIDE ESTER;3-[[(2,5-Dioxo-1-pyrrolidinyl)oxy]carbonyl]-2,5-dihydro-2,2,5,5-tetramethyl-1H-Pyrrol-1-yloxy;NSC 319633;Tempyo Ester
Price22 Properties Safety Information Description
22 prices
Selected condition：
Brand
  • aablocks
  • American Custom Chemicals Corporation
  • Cayman Chemical
  • ChemScene
  • Thermo Scientific Chemicals
  • TRC
  • Usbiological
Package
  • 5mg
  • 10mg
  • 25mg
  • 50mg
  • 100MG
  • 0.25g
  • 1g
  • Manufactureraablocks
  • Product numberAA003F5M
  • Product description2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98%
  • Packaging5mg
  • Price$127
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003F5M
  • Product description2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98%
  • Packaging10mg
  • Price$241
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003F5M
  • Product description2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98%
  • Packaging25mg
  • Price$412
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003F5M
  • Product description2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98%
  • Packaging50mg
  • Price$759
  • Updated2026-05-28
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0006956
  • Product description1-OXYL-2,2,5,5-TETRAMETHYLPYRROLINE-3-CARBOXYLATE N-HYDROXYSUCCINIMIDE ESTER 95.00%
  • Packaging100MG
  • Price$1593.9
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0006956
  • Product description1-OXYL-2,2,5,5-TETRAMETHYLPYRROLINE-3-CARBOXYLATE N-HYDROXYSUCCINIMIDE ESTER 95.00%
  • Packaging10MG
  • Price$704.55
  • Updated2021-12-16
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging50mg
  • Price$759
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging25mg
  • Price$412
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging25mg
  • Price$310
  • Updated2024-03-01
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging10mg
  • Price$241
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging10mg
  • Price$182
  • Updated2024-03-01
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging5mg
  • Price$96
  • Updated2024-03-01
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging5mg
  • Price$127
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number16148
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98%
  • Packaging50mg
  • Price$570
  • Updated2024-03-01
  • Buy
  • ManufacturerChemScene
  • Product numberCS-0854033
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester
  • Packaging50mg
  • Price$1644
  • Updated2026-06-04
  • Buy
  • ManufacturerChemScene
  • Product numberCS-0854033
  • Product description1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester
  • Packaging25mg
  • Price$1028
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003F5M 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98% 5mg $127 2026-05-28 Buy
aablocks AA003F5M 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98% 10mg $241 2026-05-28 Buy
aablocks AA003F5M 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98% 25mg $412 2026-05-28 Buy
aablocks AA003F5M 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester ≥98% 50mg $759 2026-05-28 Buy
American Custom Chemicals Corporation CHM0006956 1-OXYL-2,2,5,5-TETRAMETHYLPYRROLINE-3-CARBOXYLATE N-HYDROXYSUCCINIMIDE ESTER 95.00% 100MG $1593.9 2021-12-16 Buy
American Custom Chemicals Corporation CHM0006956 1-OXYL-2,2,5,5-TETRAMETHYLPYRROLINE-3-CARBOXYLATE N-HYDROXYSUCCINIMIDE ESTER 95.00% 10MG $704.55 2021-12-16 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 50mg $759 2026-04-30 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 25mg $412 2026-04-30 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 25mg $310 2024-03-01 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 10mg $241 2026-04-30 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 10mg $182 2024-03-01 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 5mg $96 2024-03-01 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 5mg $127 2026-04-30 Buy
Cayman Chemical 16148 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester ≥98% 50mg $570 2024-03-01 Buy
ChemScene CS-0854033 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester 50mg $1644 2026-06-04 Buy
ChemScene CS-0854033 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester 25mg $1028 2026-06-04 Buy
Next Last

Properties

Melting point :175-178 °C
storage temp. :-20°C Freezer, Under Inert Atmosphere
solubility :Methanol
form :Solid
color :Yellow
Stability :Moisture Sensitive: Desiccate
CAS DataBase Reference :37558-29-5
EPA Substance Registry System :1H-Pyrrol-1-yloxy, 3-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-2,5-dihydro-2,2,5,5-tetramethyl- (37558-29-5)

Safety Information

Symbol(GHS):
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
Precautionary statements:

Description

1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester is an N-hydroxysuccinimide ester of the nitroxide spin label 2,2,5,5-tetramethyl-3-carboxylpyrrolin-1-oxyl, also known as tempyo. This ester is an active acylating agent that preferentially targets α-amino groups. This reagent can be used to spin label proteins and aminoacylated RNA species.

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Suppliers and manufacturers

XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.
DAYANG CHEM (HANGZHOU) CO.,LTD
ShangHai IKSChem Technology Co.,LTD J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. 3B Pharmachem (Wuhan) International Co.,Ltd. Alfa Aesar Chemsky（shanghai）International Co.,Ltd. Thermo Fisher Scientific Shanghai EFE Biological Technology Co., Ltd.