8.51006

HBTU

≥99.0% (HPLC), for peptide synthesis, Novabiochem^®

• Synonyme(s) : HBTU, 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethylaminium hexafluorophosphate
• Formule empirique (notation de Hill) : C₁₁H₁₆F₆N₅OP
• Numéro CAS: 94790-37-1
• Poids moléculaire : 379.24
• Numéro MDL: MFCD00075445
• Code UNSPSC : 12352107
• Numéro de classement CE : 423-020-5
• Nomenclature NACRES : NA.22

Propriétés

• Nom du produit: HBTU, 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate Novabiochem^®
• Niveau de qualité: 300
• Gamme de produits: Novabiochem^®
• Essai: ≥99.0% (HPLC)
• Forme: powder
• Puissance: >2000 mg/kg LD₅₀, oral (Rat)
• Capacité de réaction: reaction type: Coupling Reactions
• Fabricant/nom de marque: Novabiochem^®
• pH: 4.1 (1.6 g/L in H₂O)
• Pf: 250 °C
• Solubilité: 1.6 g/L
• Application(s): peptide synthesis
• Température de stockage: 2-8°C
• Chaîne SMILES: [N+](=C(N(C)C)O[n]1nnc2c1cccc2)(C)C
• InChI: 1S/C11H16N5O/c1-14(2)11(15(3)4)17-16-10-8-6-5-7-9(10)12-13-16/h5-8H,1-4H3/q+1
• Clé InChI: CLZISMQKJZCZDN-UHFFFAOYSA-N

Description

Description générale

TBTU and HBTU are two of the most popular in situ activation reagents used in solid phase and solution phase peptide synthesis ^{[1,2,3,4,5,6,7,8,9]}. These reagents offer reactivity similar to symmetrical anhydrides and BOP ^[1]. Couplings proceed smoothly and rates can even be enhanced by the addition of HOBt ^[2,4,5,6]. In addition to having high reactivity, TBTU and HBTU have also been shown to limit enantiomerization during fragment condensation and during DMAP catalyzed esterification of arginine derivatives ^[3]. Comparative experiments between HBTU and TBTU have shown that the counter ion has no influence on coupling rates or levels of enantiomerization ^[1].

Associated Protocols and Technical Articles
Guide to Selection of Coupling Reagents

Literature references

^[1] R. Knorr, et al. (1989) Tetrahedron Lett., 30, 1927.
^[2] M. S. Bernatowicz, et al. (1989) Tetrahedron Lett., 30, 4645.
^[3] D. Ambrosius, et al. (1989) Biol. Chem. Hoppe-Seyler, 370, 217.
^[4] C. G. Fields, et al. (1991) Pept. Res., 4, 95.
^[5] A. G. Beck-Sickinger, et al. (1991) Pept. Res., 4, 88.
^[6] G. E. Reid, et al. (1992) Anal. Biochem., 200, 301.
^[7] G. B. Fields, et al. in ′Innovation & Perspectives in Solid Phase Synthesis, 1st International Symposium′, R. Epton (Eds), SPCC UK Ltd., Birmingham, 1990, pp. 241.
^[8] P. A. Baybayan, et al. in ′Peptides, Chemistry & Biology, Proc. 12th American Peptide Symposium′, J. A. Smith & J. E. Rivier (Eds), ESCOM, Leiden, 1992, pp. 566.
^[9] J. J. Dudash, et al. (1993) Synth. Commun., 23, 349.

Application

• Synthesis of Quinoxaline Derivatives Using HBTU: A study highlighting the use of HBTU as a Lewis acid catalyst for synthesizing quinoxaline derivatives, presenting a mild and green protocol (Popatkar and Meshram, 2020).
• Efficient Conversion of Carboxylic Acids into Benzimidazoles: Details an HBTU-promoted methodology for converting carboxylic acids into benzimidazoles in a one-pot strategy (Barasa and Yoganathan, 2018).
• Synthesis of Malonyl-linked Glycoconjugates: Discusses the use of HBTU in the synthesis of glycoconjugates, comparing its efficiency with other reagents (Nörrlinger et al., 2016).

Liaison

Replaces: 01-62-0010

Remarque sur l'analyse

Colour (visual): white to slight yellow to beige
Appearance of substance (visual): powder
Identity (IR): passes test
Assay (HPLC, area%): ≥ 99.0 % (a/a)
Solubility (1 mmole in 2 ml DMF): clearly soluble

Informations légales

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H317
• Conseils de prudence: P261 - P272 - P280 - P302 + P352 - P333 + P313 - P362 + P364
• Classification des risques: Skin Sens. 1A
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable