Peptide Coupling Reagents

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Diphenyl (2,3-Dihydro-2-thioxo-3-benzoxazolyl)phosphonate

Purity:

≥ 98% (Assay by titration)

Synonym:

(2,3-Dihydro-2-thioxo-3-benzoxazolyl)phosphonic acid diphenyl ester

Catalog Number:

37188

CAS Number:

111160-56-6

Purity Limit:

≥ 98% (Assay by titration)

MDL NO:

MFCD00142793

Molecular Formula:

C₁₉H₁₄NO₄PS

Molecular Weight:

383.36

Specification Sheet SDS
Tris(2,2,2-trifluoroethyl) borate

Hazmat

Purity:

≥ 95% (NMR)

Synonym:

Tris(2,2,2-trifluoroethoxy)boron

Hazmat

Catalog Number:

37191

CAS Number:

659-18-7

Purity Limit:

≥ 95% (NMR)

MDL NO:

MFCD00093768

Molecular Formula:

C₆H₆BF₉O₃

Molecular Weight:

307.91

Specification Sheet SDS
4-Trifluoromethylbenzoic anhydride

Purity:

≥ 97% (NMR)

Catalog Number:

37180

CAS Number:

25753-16-6

Purity Limit:

≥ 97% (NMR)

MDL NO:

MFCD00671577

Molecular Formula:

C₁₆H₈F₆O₃

Molecular Weight:

362.23

Specification Sheet SDS
2,6-Di-tert-butyl-1,4-benzoquinone

Purity:

≥ 98% (GC)

Synonym:

2,6-Di-tert-butyl-p-quinone

Catalog Number:

37189

CAS Number:

719-22-2

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD00001601

Molecular Formula:

C₁₄H₂₀O₂

Molecular Weight:

220.31

Specification Sheet SDS
1-(Trifluoromethanesulfonyl)imidazole

Purity:

≥ 98% (GC)

Catalog Number:

37186

CAS Number:

29540-81-6

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD00037891

Molecular Formula:

C₄H₃F₃N₂O₂S

Molecular Weight:

200.14

Specification Sheet SDS
Trifluoromethanesulfonanilide

Hazmat

Purity:

≥ 98% (Assay by titration, HPLC)

Synonym:

1,1,1-Trifluoro-N-phenylmethanesulfonamide

Hazmat

Catalog Number:

37185

CAS Number:

456-64-4

Purity Limit:

≥ 98% (Assay by titration, HPLC)

MDL NO:

MFCD00521820

Molecular Formula:

C₇H₆F₃NO₂S

Molecular Weight:

225.19

Specification Sheet SDS
N-(2-Pyridyl)bis(trifluoromethanesulfonimide)

Purity:

≥ 98% (GC)

Synonym:

2-[N,N-Bistrifluoromethylsulfonyl)amino]pyridine

Catalog Number:

37182

CAS Number:

145100-50-1

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD00191834

Molecular Formula:

C₇H₄F₆N₂O₄S₂

Molecular Weight:

358.23

Specification Sheet SDS
4-Nitrophenyl trifluoromethanesulfonate

Hazmat

Purity:

≥ 99% (GC)

Synonym:

4-Nitrophenyl triflate

Hazmat

Catalog Number:

37183

CAS Number:

17763-80-3

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00192354

Molecular Formula:

C₇H₄F₃NO₅S

Molecular Weight:

271.17

Specification Sheet SDS
Di(2-pyridyl) thionocarbonate

Purity:

≥ 99.5% (Assay by titration)

Synonym:

O,O'-Di-2-pyridyl thiocarbonate

Catalog Number:

37181

CAS Number:

96989-50-3

Purity Limit:

≥ 99.5% (Assay by titration)

MDL NO:

MFCD00074870

Molecular Formula:

C₁₁H₈N₂O₂S

Molecular Weight:

232.26

Specification Sheet SDS
Diethyl cyanophosphonate

Hazmat

Purity:

≥ 95% (GC)

Synonym:

Cyanophosphonic acid diethyl ester

Hazmat

Catalog Number:

37177

CAS Number:

2942-58-7

Purity Limit:

≥ 95% (GC)

MDL NO:

MFCD00010256

Molecular Formula:

C₅H₁₀NO₃P

Molecular Weight:

163.11

Specification Sheet SDS
2-Methyl-6-nitrobenzoic anhydride

Purity:

≥ 98% (Asay by titration)

Synonym:

6-Nitro-o-toluic anhydride

Catalog Number:

37178

CAS Number:

434935-69-0

Purity Limit:

≥ 98% (Asay by titration)

MDL NO:

MFCD06797117

Molecular Formula:

C₁₆H₁₂N₂O₇

Molecular Weight:

344.28

Specification Sheet SDS
2,4,6-Trichlorobenzoyl chloride

Hazmat

Purity:

≥ 99% (Assay by titration, GC)

Hazmat

Catalog Number:

37179

CAS Number:

4136-95-2

Purity Limit:

≥ 99% (Assay by titration, GC)

MDL NO:

MFCD00075323

Molecular Formula:

C₇H₂Cl₄O

Molecular Weight:

243.89

Specification Sheet SDS
(Tributylphosphoranylidene)acetonitrile

Purity:

≥ 98% (GC)

Synonym:

(Cyanomethylene)tributylphosphorane

Catalog Number:

36545

CAS Number:

157141-27-0

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD01321151

Molecular Formula:

C₁₄H₂₈NP

Molecular Weight:

241.35

Specification Sheet SDS
2-Bromo-1-ethyl-pyridinium tetrafluoroborate

Purity:

≥ 97% (Assay by titration)

Catalog Number:

36138

CAS Number:

878-23-9

Purity Limit:

≥ 97% (Assay by titration)

MDL NO:

MFCD00060046

Molecular Formula:

C₇H₉BBrF₄N

Molecular Weight:

273.86

Specification Sheet SDS
4-Dimethylaminopyridine, Prilled

Hazmat

Purity:

≥ 99.5% (Assay by titration, GC)

Synonym:

DMAP

Hazmat

Catalog Number:

33386

CAS Number:

1122-58-3

Purity Limit:

≥ 99.5% (Assay by titration, GC)

MDL NO:

MFCD00006418

Molecular Formula:

C₇H₁₀N₂

Molecular Weight:

122.17

Specification Sheet SDS
N-(5-Chloro-2-pyridyl)bis(trifluoromethanesulfonimide)

Purity:

≥ 99%(GC, HPLC)

Synonym:

2-[N,N-Bis(trifluoromethylsulfonyl)amino]-5-chloropyridine

Catalog Number:

31548

CAS Number:

145100-51-2

Purity Limit:

≥ 99%(GC, HPLC)

MDL NO:

MFCD00191833

Molecular Formula:

C₇H₃ClF₆N₂O₄S₂

Molecular Weight:

392.68

SDS
N-Phenyl-bis(trifluoromethanesulfonimide)

Purity:

≥ 99% (HPLC)

Synonym:

1,1,1-Trifluoro-N-phenyl-N-[(trifluoromethyl)sulfonyl]methanesulfonamide

Catalog Number:

31457

CAS Number:

37595-74-7

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00000404

Molecular Formula:

C₈H₅F₆NO₄S₂

Molecular Weight:

357.25

Specification Sheet SDS
Pentafluorophenyl 4-nitrobenzenesulfonate

Purity:

≥ 99% (HPLC)

Synonym:

4-Nitrobenzenesulfonic acid pentafluorophenyl ester

Catalog Number:

31391

CAS Number:

244633-31-6

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD05975120

Molecular Formula:

C₁₂H₄F₅NO₅S

Molecular Weight:

369.22

Specification Sheet SDS
Pentafluorophenyl diphenylphosphinate

Purity:

≥ 99% (HPLC)

Synonym:

Diphenylphosphinic acid pentafluorophenyl ester

Catalog Number:

31228

CAS Number:

138687-69-1

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00192380

Molecular Formula:

C₁₈H₁₀F₅O₂P

Molecular Weight:

384.24

Specification Sheet SDS
Di-2-pyridyl carbonate

Purity:

≥ 99% (HPLC)

Synonym:

Carbonic acid di-2-pyridyl ester

Catalog Number:

31230

CAS Number:

1659-31-0

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00191407

Molecular Formula:

C₁₁H₈N₂O₃

Molecular Weight:

216.19

Specification Sheet SDS
2-Chloro-1-methylpyridinium p-toluenesulfonate

Purity:

≥ 98% (HPLC)

Catalog Number:

31288

CAS Number:

7403-46-5

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00011985

Molecular Formula:

C₇H₇O₃S·C₆H₇ClN

Molecular Weight:

299.77

Specification Sheet SDS
2-Chloro-1,3-dimethylimidazolinium hexafluorophosphate

Purity:

≥ 99% (HPLC)

Synonym:

2-Chloro-4,5-dihydro-1,3-dimethyl-1H-imidazolium hexafluorophosphate

Catalog Number:

31201

CAS Number:

101385-69-7

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00191914

Molecular Formula:

C₅H₁₀ClN₂·PF₆

Molecular Weight:

278.56

Specification Sheet SDS
2-Chloro-1,3-dimethylimidazolinium chloride

Purity:

≥ 97% (Assay by titration)

Synonym:

2-Chloro-4,5-dihydro-1,3-dimethyl-1H-imidazolium chloride

Catalog Number:

31222

CAS Number:

37091-73-9

Purity Limit:

≥ 97% (Assay by titration)

MDL NO:

MFCD09039290

Molecular Formula:

C₅H₁₀Cl₂N₂

Molecular Weight:

169.05

Specification Sheet SDS
N,N,N',N'-Tetramethyl-S-(1-oxido-2-pyridyl)thiouronium hexafluorophosphate

Purity:

≥ 99% (HPLC)

Synonym:

S-(1-Oxido-2-pyridyl)-N,N,N',N'-tetramethylthiuronium hexafluorophosphate

Catalog Number:

31213

CAS Number:

212333-72-7

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD05865266

Molecular Formula:

C₁₀H₁₆N₃OS·PF₆

Molecular Weight:

371.28

Specification Sheet SDS
Bromotris(dimethylamino)phosphonium hexafluorophosphate

Hazmat

Purity:

≥ 99% (HPLC)

Synonym:

Bromotris(N-methylmethanaminato)phosphorus hexafluorophosphate

Hazmat

Catalog Number:

31198

CAS Number:

50296-37-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00191864

Molecular Formula:

C₆H₁₈BrF₆N₃P₂

Molecular Weight:

388.07

Specification Sheet SDS
N,N,N',N'Bis(tetramethylene)-O-(N-succinimidyl)uronium hexafluorophosphate

Purity:

≥ 99% (HPLC)

Synonym:

Dipyrrolidino(N-succinimidyloxy)carbenium hexafluorophosphate

Catalog Number:

31212

CAS Number:

207683-26-9

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00192457

Molecular Formula:

C₁₃H₂₀N₃O₃·PF₆

Molecular Weight:

411.28

Specification Sheet SDS
O-(Benzotriazol-1-yl)- N,N,N',N'-bis(tetramethylene)uronium hexafluorophosphate

Purity:

≥ 99% (HPLC)

Synonym:

(Benzotriazol-1-yloxy)dipyrrolidinocarbenium hexafluorophosphate

Catalog Number:

31206

CAS Number:

105379-24-6

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00191770

Molecular Formula:

C₁₅H₂₀N₅O·PF₆

Molecular Weight:

431.32

Specification Sheet SDS
2-Chloro-1,3-dimethylimidazolium tetrafluoroborate

Purity:

≥ 99% (HPLC)

Synonym:

CIB

Catalog Number:

31200

CAS Number:

153433-26-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD17976893

Molecular Formula:

C₅H₁₀ClN₂·BF₄

Molecular Weight:

220.4

Specification Sheet SDS
1,3-Dicyclohexylcarbodiimide solution (1.0 M in methylene chloride)

Hazmat

Synonym:

N,N'-Dicyclohexylcarbodiimide solution

Hazmat

Catalog Number:

31118

CAS Number:

538-75-0

MDL NO:

MFCD00011659

Molecular Formula:

C₁₃H₂₂N₂

Molecular Weight:

206.33

SDS
4-(Dimethylamino)pyridine solution, 0.5 M in ethyl acetate

Hazmat

Purity:

0.40 - 0.60 M

Synonym:

DMAP solution

Hazmat

Catalog Number:

30845

CAS Number:

1122-58-3

Purity Limit:

0.40 - 0.60 M

MDL NO:

MFCD00006418

Molecular Formula:

C₇H₁₀N₂

Molecular Weight:

122.17

SDS
1-(4-Tolylsulfonyl)imidazole

Purity:

≥ 99% (HPLC)

Synonym:

1-Tosyl-1H-imidazole

Catalog Number:

26935

CAS Number:

2232-08-8

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00005285

Molecular Formula:

C₁₀H₁₀N₂O₂S

Molecular Weight:

222.27

Specification Sheet SDS
Diphenylphosphorus oxychloride

Hazmat

Purity:

≥ 98%

Synonym:

Diphenylchlorophosphine oxide

Hazmat

Catalog Number:

26798

CAS Number:

1499-21-4

Purity Limit:

≥ 98%

MDL NO:

MFCD00002077

Molecular Formula:

C₁₂H₁₀ClOP

Molecular Weight:

236.64

Specification Sheet SDS
Ethyl 1-hydroxy-1H-1,2,3-triazole-4-carboxylate

Purity:

≥ 99% (HPLC)

Catalog Number:

15129

CAS Number:

137156-41-3

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD06796746

Molecular Formula:

C₅H₇N₃O₃

Molecular Weight:

157.13

Specification Sheet SDS
1,1'-Carbonyldi(1,2,4-triazole)

Purity:

≥ 98%

Synonym:

CDT

Catalog Number:

14114

CAS Number:

41864-22-6

Purity Limit:

≥ 98%

MDL NO:

MFCD00043399

Molecular Formula:

C₅H₄N₆O

Molecular Weight:

164.13

Specification Sheet SDS
4-Nitrobenzyl chloroformate

Hazmat

Purity:

≥ 98% (HPLC)

Synonym:

4-Nitrobenzyl chlorocarbonate

Hazmat

Catalog Number:

12968

CAS Number:

4457-32-3

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00007375

Molecular Formula:

C₈H₆ClNO₄

Molecular Weight:

215.6

Specification Sheet SDS
Chloro-dipyrrolidinocarbenium hexafluorophosphate

Purity:

≥ 98% (HPLC)

Synonym:

PyClU

Catalog Number:

12939

CAS Number:

135540-11-3

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00191333

Molecular Formula:

C₉H₁₆ClF₆N₂P

Molecular Weight:

332.66

Specification Sheet SDS
Bis(4-nitrophenyl)carbonate

Purity:

≥ 98% (HPLC)

Synonym:

4-Nitrophenyl carbonate

Catalog Number:

12948

CAS Number:

5070-13-3

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00007322

Molecular Formula:

C₁₃H₈N₂O₇

Molecular Weight:

304.21

Specification Sheet SDS
Oxalic acid diimidazolide

Purity:

≥ 98% (Assay by Titration)

Synonym:

1,1'-Oxalyldi-imidazole

Catalog Number:

12829

CAS Number:

18637-83-7

Purity Limit:

≥ 98% (Assay by Titration)

MDL NO:

MFCD00043067

Molecular Formula:

C₈H₆N₄O₂

Molecular Weight:

190.16

Specification Sheet SDS
Tetramethylfluoroformamidiniun hexafluorophosphate

Purity:

≥ 98% (HPLC)

Synonym:

TFFH

Catalog Number:

05189

CAS Number:

164298-23-1

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD02684443

Molecular Formula:

C₅H₁₂N₂PF₇

Molecular Weight:

264.12

Specification Sheet SDS
O-[(Ethoxycarbonyl)cyanomethyleneamino]-N,N,N',N'-tetramethyluronium tetrafluoro-borate

Purity:

≥ 99% (HPLC)

Synonym:

TOTU

Catalog Number:

04884

CAS Number:

136849-72-4

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00192127

Molecular Formula:

C₁₀H₁₇BF₄N₄O₃

Molecular Weight:

328.08

Specification Sheet SDS
Chlorotripyrrolidinophosphonium hexafluorophosphate

Purity:

≥ 98% (HPLC)

Synonym:

PyCloP

Catalog Number:

04880

CAS Number:

133894-48-1

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00210035

Molecular Formula:

C₁₂H₂₄F₆N₃P₂Cl

Molecular Weight:

421.74

Specification Sheet SDS
1-Hydroxy-6-(trifluoromethyl)benzotriazole

Hazmat

Purity:

≥ 98% (HPLC)

Synonym:

6-(Trifluoro-methyl)-HOBT

Hazmat

Catalog Number:

03533

CAS Number:

26198-21-0

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00038806

Molecular Formula:

C₇H₄N₃OF₃

Molecular Weight:

203.12

Specification Sheet SDS
4-Nitrophenyl trifluoroacetate

Purity:

≥ 99% (HPLC)

Synonym:

Trifluoroacetic acid 4-nitrophenyl ester

Catalog Number:

02341

CAS Number:

658-78-6

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00007324

Molecular Formula:

C₈H₄F₃NO₄

Molecular Weight:

235.12

Specification Sheet SDS
4-Pyrrolidinopyridine

Hazmat

Purity:

≥ 98% (Assay)

Synonym:

1-(4-Pyridyl)pyrrolidine

Hazmat

Catalog Number:

02356

CAS Number:

2456-81-7

Purity Limit:

≥ 98% (Assay)

MDL NO:

MFCD00006415

Molecular Formula:

C₉H₁₂N₂

Molecular Weight:

148.2

Specification Sheet SDS
2-(2-Pyridon-1yl)-1,1,3,3-tetramethyluronium tetrafluoroborate

Purity:

≥ 99% (HPLC)

Synonym:

TPTU/TOPPyU

Catalog Number:

02355

CAS Number:

125700-71-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00075475

Molecular Formula:

C₁₀H₁₆BF₄N₃O₂

Molecular Weight:

297.06

Specification Sheet SDS
2-(5-Norbornen-2,3-dicarboximido)-1,1,3,3-tetramethyluronium tetrafluoroborate

Purity:

≥ 99% (HPLC)

Synonym:

TNTU

Catalog Number:

02343

CAS Number:

125700-73-4

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00167753

Molecular Formula:

C₁₄H₂₀BF₄N₃O₃

Molecular Weight:

365.14

Specification Sheet SDS
N,N-Bis(2-oxo-3-oxazolidinyl)phosphinic chloride

Hazmat

Purity:

≥ 98% (Assay)

Synonym:

BOP-Cl

Hazmat

Catalog Number:

02280

CAS Number:

68641-49-6

Purity Limit:

≥ 98% (Assay)

MDL NO:

MFCD00010077

Molecular Formula:

C₆H₈ClN₂O₅P

Molecular Weight:

254.6

Specification Sheet SDS
3-Nitro-1H-1,2,4-triazole

Purity:

≥ 99% (Assay)

Catalog Number:

00941

CAS Number:

24807-55-4

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00009749

Molecular Formula:

C₂H₂N₄O₂

Molecular Weight:

114.1

Specification Sheet SDS
2-Fluoro-1-methylpyridinium 4-toluenesulfonate

Purity:

≥ 98% (NMR)

Synonym:

1 Methyl-2-fluoropyridinium tosylate

Catalog Number:

01278

CAS Number:

58086-67-2

Purity Limit:

≥ 98% (NMR)

MDL NO:

MFCD00011983

Molecular Formula:

C₆H₇FN·C₇H₇O₃S

Molecular Weight:

283.3

Specification Sheet SDS
1-(2,4,6-Triisopropylbenzenesulfonyl)-1H-1,2,4-triazole

Synonym:

TPST

Catalog Number:

00932

CAS Number:

54230-60-3

MDL NO:

MFCD00014089

Molecular Formula:

C₁₇H₂₅N₃O₂S

Molecular Weight:

335.5

SDS

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