If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
54802
1-Hydroxybenzotriazole hydrate
≥97.0% dry basis (T), for peptide synthesis
Synonym(s):
HOBt Hydrate
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About This Item
Product Name
1-Hydroxybenzotriazole hydrate, ≥97.0% dry basis (T)
Quality Segment
assay
≥97.0% dry basis (T)
form
solid
composition
water, ~12%
reaction suitability
reaction type: Addition Reactions
mp
155-158 °C (lit.)
solubility
DMF: 0.1 g/mL, clear
application(s)
peptide synthesis
SMILES string
[H]O[H].On1nnc2ccccc12
InChI
1S/C6H5N3O.H2O/c10-9-6-4-2-1-3-5(6)7-8-9;/h1-4,10H;1H2
InChI key
PJUPKRYGDFTMTM-UHFFFAOYSA-N
General description
Application
- Poly-γ-glutamic acid methyl ester from a dimer of γ-glutamic acid.
- Oxadiazoles via cyclo condensation of amidoximes with trifluoroacetic anhydride or benzoic acid derivatives.
1 of 1
This Item | ||
|---|---|---|
| description ≥97.0% dry basis (T) | description wetted with not less than 20 wt. % water, 97% dry basis | description wetted with not less than 14 wt. % water, 98% dry basis |
| form solid | form powder | form solid |
| assay ≥97.0% dry basis (T) | assay 97% dry basis | assay 98% dry basis |
| mp 155-158 °C (lit.) | mp 155-158 °C (lit.) | mp 155-158 °C (lit.) |
| solubility DMF: 0.1 g/mL, clear | solubility DMF: 0.1 g/mL, clear | solubility - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 |
| application(s) peptide synthesis | application(s) - | application(s) peptide synthesis |
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Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Aquatic Chronic 3 - Desen. Expl. 2 - Eye Irrit. 2
Storage Class
4.1A - Other explosive hazardous materials
WGK
WGK 1
Flash Point (°F)
314.6 °F
Flash Point (°C)
157 °C
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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