Skip to content
Molekula

Molekula

HOBT anhydrous (1-Hydroxybenzotriazole anhydrous)

SKU 45566850 CAS 2592-95-2 C6H5N3O MW 135.1234 Available on enquiry

Supplying 4,500+ customers in over 80 countries

ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch

HOBT anhydrous (1-Hydroxybenzotriazole anhydrous) is a widely used coupling reagent in peptide synthesis, facilitating amide bond formation with high efficiency and minimal racemization. It is also employed in organic synthesis to activate carboxylic acids for ester and amide formation. HOBT anhydrous has a CAS number of 2592-95-2, a molecular formula of C6H5N3O, and a molecular weight of 135.1234 g/mol. It requires storage at +4°C or below and carries no signal word for hazard classification. Molekula supplies HOBT anhydrous from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.

Contact sales
Expect a response within hours Speak to a chemist: +44 (0) 3302 000333

Overview

SKU
45566850
CAS Number
2592-95-2
IUPAC Name
1-hydroxybenzotriazole
EC Number
219-989-7
Molecular Formula
C6H5N3O
Molecular Weight
135.1234
Exact Mass
135.0433
SMILES
C1=CC=C2C(=C1)N=NN2O
InChIKey
ASOKPJOREAFHNY-UHFFFAOYSA-N
InChI
InChI=1S/C6H5N3O/c10-9-6-4-2-1-3-5(6)7-8-9/h1-4,10H
PubChem CID
75771

Synonyms

  • 1-Benzotriazolol
  • 1-Hydroxy-1H-benzotriazole
  • 1-Hydroxybenzotriazole
  • 1H-1,2,3-Benzotriazol-1-ol
  • 1H-Benzo[d][1,2,3]triazol-1-ol
  • 1H-Benzotriazol-1-ol
  • 1H-Benzotriazole, 1-hydroxy-
  • Benzazimidol
  • HOBt
  • N-Hydroxybenzotriazole

Frequently asked questions

What is HOBT anhydrous (1-Hydroxybenzotriazole anhydrous) commonly used for?

HOBT anhydrous is primarily used as a coupling reagent in peptide synthesis, particularly in amide bond formation via carbodiimide-mediated reactions.

What is the chemical formula and molecular weight of HOBT anhydrous?

The chemical formula is C₆H₅N₃O, and the molecular weight is 135.12 g/mol.

How should HOBT anhydrous be stored?

Store in a tightly sealed container under dry conditions, protected from moisture, and keep at +4°C.

What grades or purities of HOBT anhydrous does Molekula supply?

Molekula supplies anhydrous-grade HOBT, typically ≥99% purity, suitable for high-purity applications like peptide synthesis.

Can Molekula supply HOBT anhydrous in bulk quantities?

Yes, Molekula can provide HOBT anhydrous in bulk, with quantities tailored to your research or industrial needs—please contact us for pricing and availability.

What documentation comes with an order of HOBT anhydrous?

Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a batch-specific quality report for traceability.

Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.

Request a quote
Tell us the product and the quantity you need — including quantities larger than our listed packs. Expect a response within hours.
Full name
Company
Email
Phone (optional)
Product
Quantity needed

Ask for whatever you actually need — the pack sizes on our catalogue pages are a starting point, not a limit.

Message
View basket