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
89803
Methoxyamine hydrochloride
derivatization grade (GC derivatization), LiChropur™, 97.5-102.5% (AT)
Synonym(s):
O-Methylhydroxylamine hydrochloride, Methoxylamine hydrochloride
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
1 g | Please contact Customer Service for Availability | CZK 1,280.00 |
5 g | Please contact Customer Service for Availability | CZK 3,710.00 |
About This Item
grade
derivatization grade (GC derivatization)
Quality Segment
assay
97.5-102.5% (AT)
form
crystals
quality
LiChropur™
reaction suitability
reagent type: derivatization reagent
reaction type: Acylations
technique(s)
gas chromatography (GC): suitable
mp
151-154 °C (lit.)
SMILES string
Cl.CON
InChI
1S/CH5NO.ClH/c1-3-2;/h2H2,1H3;1H
InChI key
XNXVOSBNFZWHBV-UHFFFAOYSA-N
General description
Application
- A reagent for the preparation of O-methyl oximes.
- A reagent used to make O-methyl oximes from aldehydes or ketones.
- An alkylation reagent.
- It may be used as a derivatization agent to improve the sensitivity of opioids,[1] steroids and ionic metabolites in biological samples and non-volatile flavor compounds in "Angeleno" plum fruit prior to the determination of analytes using gas chromatography-mass spectrometry (GC-MS) technique.
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| assay 97.5-102.5% (AT) | assay 98% | assay - | assay 99.0-101.0% (wt., AT) |
| reaction suitability reagent type: derivatization reagent | reaction suitability - | reaction suitability - | reaction suitability reagent type: derivatization reagent |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| mp 151-154 °C (lit.) | mp 151-154 °C (lit.) | mp - | mp 130-133 °C (lit.) |
| form crystals | form solid | form - | form - |
| quality LiChropur™ | quality - | quality - | quality LiChropur™ |
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signalword
Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 1
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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Once reconstituted (in pyridine), for how long can it be stored at -20 degrees?
1 answer-
The solution stability of this product, when reconstituted in pyridine, has not been investigated. However, a previously available product, 225517, Methoxylamine hydrochloride solution 25-30 wt. % in H2O, offered a minimum shelf life of 1 year from the date of shipment, when stored at room temperature. Other online sources state that solutions prepared in DMSO are stable for 1 year when stored at -20°C and 2 years when stored at -80°C. Solutions prepared in high purity, dry pyridine may have exhibit similar stability.
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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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