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TSTU

Product Name
TSTU
CAS No.
105832-38-0
Chemical Name
TSTU
Synonyms
O-(N-SUCCINIMIDYL)-1,1,3,3-TETRAMETHYLURONIUM TETRAFLUOROBORATE;O-(N-SucciniMidyl)-1,1,3,3-tetraMethyl uraniuM tetrafluoroborate;TSTU, N-{(Dimethylamino)[(2,5-dioxopyrrolidin-1-yl)oxy]methylidene}-N-methylmethylaminium tetrafluoroborate;TSTU;HONSTU;TSTU 25 G;TSTU USP/EP/BP;TIANFUCHEM---TSTU;2-Succinimido-1,1,3;Tofacitinib Impurity 150
CBNumber
CB5415670
Molecular Formula
C9H16BF4N3O3
Formula Weight
301.05
MOL File
105832-38-0.mol
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TSTU Property

Melting point:
198-201 °C(lit.)
Density 
1.41 g/cm
storage temp. 
2-8°C
solubility 
acetonitrile: 0.1 g/mL, clear
form 
Crystalline Powder or Needles
color 
White to off-white
Sensitive 
Moisture Sensitive
InChI
InChI=1S/C9H16N3O3.BF4/c1-10(2)9(11(3)4)15-12-7(13)5-6-8(12)14;2-1(3,4)5/h5-6H2,1-4H3;/q+1;-1
InChIKey
BVYYWTQJMFGHLU-UHFFFAOYSA-M
SMILES
[B+3]([F-])([F-])([F-])[F-].O(N1C(CCC1=O)=O)/C(=[N+](\C)/C)/N(C)C
CAS DataBase Reference
105832-38-0(CAS DataBase Reference)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
RIDADR 
1759
WGK Germany 
3
F 
8-10-21
HazardClass 
8
PackingGroup 
III
HS Code 
29280000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
385530
Product name
N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate
Purity
97%
Packaging
1g
Price
$80.8
Updated
2025/07/31
Sigma-Aldrich
Product number
8.51206
Product name
TSTU
Purity
Novabiochem?
Packaging
25g
Price
$155
Updated
2025/07/31
Sigma-Aldrich
Product number
385530
Product name
N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate
Purity
97%
Packaging
5g
Price
$186
Updated
2025/07/31
TCI Chemical
Product number
T2224
Product name
N,N,N',N'-Tetramethyl-O-(N-succinimidyl)uronium Tetrafluoroborate
Purity
>98.0%(HPLC)(N)
Packaging
1g
Price
$37
Updated
2025/07/31
TCI Chemical
Product number
T2224
Product name
N,N,N',N'-Tetramethyl-O-(N-succinimidyl)uronium Tetrafluoroborate
Purity
>98.0%(HPLC)(N)
Packaging
5g
Price
$93
Updated
2025/07/31
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TSTU Chemical Properties,Usage,Production

Chemical Properties

White crystalline

Uses

peptide coupling reagent converts carboxylates to N-succinimidyl active esters

Uses

Reagent for the clean in-situ formation of N-succinimidyl active esters

Uses

TSTU is used as a peptide coupling reagent in solvent systems.

General Description

N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate is commonly used for the conversion of carboxylic acid into the corresponding N-hydroxysuccinimidyl (NHS) ester.

reaction suitability

reaction type: Coupling Reactions

TSTU Preparation Products And Raw materials

Raw materials

Preparation Products

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TSTU Suppliers

China 272 Europe 2 France 1 Germany 5 India 9 Israel 1 Japan 2 Slovakia 1 Switzerland 2 Ukraine 1 United Kingdom 15 United States 41 Global 352
Suzhou Highfine Biotech Co., Ltd
Tel
0512-69209928 18796809688
Fax
0512-68417696
Email
zhouyingxiang@highfine.com
Country
China
ProdList
475
Advantage
75
Binhai gill polypeptide co. LTD
Tel
021-61263389 13524856427
Fax
WeChat630417570
Email
Joetang@glschina.com
Country
China
ProdList
10000
Advantage
58
Huai'an Enrico Biotech Co., Ltd
Tel
0517-83900106 19962248636
Email
752281871@qq.com
Country
China
ProdList
46
Advantage
58
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006356688 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
ShangHai DEMO Chemical Co.,Ltd
Tel
400-021-7337 2355568890
Fax
0086-21-50182339
Email
sales@demochem.com
Country
China
ProdList
2572
Advantage
57
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44801
Advantage
61
Wuhan Chemwish Technology Co., Ltd
Tel
86-027-67849912
Fax
86-027-87531808
Email
sales@chemwish.com
Country
China
ProdList
35896
Advantage
56
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View Lastest Price from TSTU manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
TSTU 105832-38-0
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99.9%
Supply Ability
20T
Release date
2024-07-09
Watson Biotechnology Co.,Ltd
Product
TSTU 2-Succinimido-1,1,3,3-tetra-methyluronium tetrafluoroborate 105832-38-0
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20MT
Release date
2024-08-14
Henan Aochuang Chemical Co.,Ltd.
Product
TSTU 105832-38-0
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1ton
Release date
2022-09-26

105832-38-0, TSTURelated Search:

AZURE B TETRAFLUOROBORATE 1,1,3,3-Tetramethylurea Succinimide O-Phthalimide Bismaleimide N-Chlorosuccinimide Diethylcarbamyl chloride N,N-BIS(2-CHLOROETHYL)BENZENEMETHANAMINE Bromo-tris-pyrrolidino-phosphonium hexafluorophosphate Diphenylphosphoryl azide Fluoroboric acid URANIUM Polyamideimide DIALIFOS Ethylamine-borontrifluoride 2-(5-Norborene-2,3-dicarboximido)-1,1,3,3-tetramethyluronium tetrafluoroborate TPD-OSU Boron trifluoride dihydrate

  • HONSTU
  • O-(N-SUCCINIMIDYL)-1,1,3,3-TETRAMETHYLURONIUM TETRAFLUOROBORATE
  • 2-SUCCINIMIDO-1,1,3,3-TETRAMETHYLURONIUM TETRAFLUOROBORATE
  • O-(N-SucciniMidyl)-1,1,3,3-tetraMethyl uraniuM tetrafluoroborate
  • TSTU, N-{(Dimethylamino)[(2,5-dioxopyrrolidin-1-yl)oxy]methylidene}-N-methylmethylaminium tetrafluoroborate
  • 2-Succinimido-1,1,3,3-tetra-methyluronium etrafluoroborate O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate
  • N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate,O-(N-Succinimidyl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate, TSTU
  • 2-Succinimido-1,1,3
  • N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uroniu
  • N,N,N′,N′-TetraMethyl-O-(N-succiniMidyl)uroniuM tetrafluoroborate (TSTU)
  • 2-(2,5-Dioxopyrrolidin-1-yl)-1,1,3,3-tetraMethylisouroniuM tetrafluoroborate
  • N,N,N',N'-TetraMethyl-O-(N-succiniMidyl)uroniuM tetrafluoroborate 97%
  • 2-SucciniMido-1,1,3,3-tetra-MethyluroniuM tetrafluoroborate (TSTU)
  • <i>N,N,N',N'<i>-Tetramethyl-O-(<i>N</i>-succinimidyl)uronium tetrafluoroborate
  • 2-Succinimido-1,1,3,3-tetramethyluronium tetrafluoroborate≥ 99% (HPLC)
  • O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium Tetrafluorob
  • 2Succinio1133tetramethyluronium tetrafluobate
  • N,N,N',N'-TETRAMETHYL-O-(N-SUCCINIMIDYL)URONIUM TETRAFLUOROBORATE
  • N,N,N',N'-TETRAMETHYL-O-(SUCCINIMIDYL)URONIUM TETRAFLUOROBORATE
  • TSTU
  • TSTU, O-(N-Succinimidyl)-1,1,3,3-tetramethyluronium tetrafluoroborate
  • TSTU [O-(N-SUCCINIMIDYL)-N,N,N',N'-TETRAMETHYL URONIUM BF4]
  • N,N,N'N'-Tetramethyl-O-(N-succinimidyl)uroniumTet
  • O-(N-Succinimidyl)-1,1,3,3-tetramethyluroniumtetr
  • 2-Succinimide-1,1,3,3-tetramethyluronium tetrafluoroborate
  • TSTU 2-SUCCINIMIDO-1,1,3,3-TETRA-METHYLURONIUM TETRAFLUOROBORATE
  • TSTU O-(N-Succinimidyl)-1,1,3,3-tetramethyl uranium tetrafluoroborate
  • O-(N-SUCCINIMIDYL)-1,1,3,3-TETRAMETHYLURONIUM TETRAFLUOROBORATE TSTU
  • O-(N-SUCCINIMIDYL)-N,N,N'',N''-TETRAMETHYLURONIUM TETRAFLUOROBORATE (TSTU)
  • O-(N-succinimidyl)-tetramethyluronium tetrafluoroborate
  • TSTU, O-(N-Succinimidyl)-N,N,Nμ,Nμ-tetramethyluronium tetrafluoroborate
  • O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborat
  • 2-succinimide-1,1,3,3-tetramethylurea tetrafluoroborate
  • TSTU 25 G
  • TSTU USP/EP/BP
  • O-(N-Succinimido)-N,N,N',N'-tetramethyluronium tetrafluoroborate(TSTU)
  • [Dimethylamino-(2,5-dioxopyrrolidin-1-yl)oxy-methylene]-dimethyl-ammonium tetrafluoroborate
  • TIANFUCHEM---TSTU
  • [dimethylamino-(2,5-dioxopyrrolidin-1-yl)oxymethylidene]-dimethylazanium
  • TSTU 2-SucciniMido-1,1,3,3-tetra-MethyluroniuM tetrafluoro
  • O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium Tetrafluoroborate
  • Methanaminium, N-[(dimethylamino)[(2,5-dioxo-1-pyrrolidinyl)oxy]methylene]-N-methyl-, tetrafluoroborate(1-) (1:1)
  • N,N,N',N'-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate (TSTU)
  • 2-SUCCINIMIDO-1,1,3,3-TETRAMETHYLURONIUM
  • N,N,N’,N’-Tetramethyl-O-(N-succinimidyl)uronium Tetrafluoroborate
  • O-(N-succinimidyl)-N,N,N',N'-tetramethyl uronium bf4
  • <i>N</i>,<i>N</i>,<i>N</i>′,<i>N</i>′-Tetramethyl-<i>O</i>-(<i>N</i>-succinimidyl)uronium tetrafluoroborate
  • N,N,N′,N′-Tetramethyl-O-(N-succinimidyl)uronium tetrafluoroborate, CAS 105832-38-0
  • O - (N-succinimide) - N N N '' N '' - tetramethyltetrafluoroborate urea
  • Tofacitinib Impurity 150
  • O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate
  • 105832-38-0
  • 05832-38-0
  • C9H16BF4N3O3
  • C9H16O3N3BF4
  • C9H16N3O3BF4
  • BF4C9H16N3O3
  • Coupling Reactions (Peptide Synthesis)