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194484

Sigma-Aldrich

O-(2,3,4,5,6-Pentafluorobenzyl)hydroxylamine hydrochloride

≥98%

Synonym(s):

PFBHA·HCl

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About This Item

Linear Formula:
C6F5CH2ONH2·HCl
CAS Number:
57981-02-9
Molecular Weight:
249.57
Beilstein:
4031190
EC Number:
261-057-7
MDL number:
MFCD00012953
UNSPSC Code:
12352100
PubChem Substance ID:
24851655
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

100

Assay

≥98%

form

solid

mp

227 °C (subl.) (lit.)

solubility

water: soluble 50 mg/mL, clear to slightly hazy, colorless

functional group

fluoro

SMILES string

Cl.NOCc1c(F)c(F)c(F)c(F)c1F

InChI

1S/C7H4F5NO.ClH/c8-3-2(1-14-13)4(9)6(11)7(12)5(3)10;/h1,13H2;1H

InChI key

HVMVKNXIMUCYJA-UHFFFAOYSA-N

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Application

O-(2,3,4,5,6-Pentafluorobenzyl)hydroxylamine hydrochloride is used:
  • In the preparation of oximes of steroids-bearing keto group.[1]
  • As a derivatization reagent in the determination of thromboxane B2, prostaglandins, amygdalin, and a variety of aldehydes, ketones, and acids.[2]
It is a versatile reagent used for the detection of carbonyl-containing compounds by GC, GC-MS, and other methods.[2]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM3788
BCCG5577
BCCH6337
BCCH0583
BCCF8143

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O-(Trimethylsilyl)hydroxylamine technical grade, 90%

Sigma-Aldrich

440442

O-(Trimethylsilyl)hydroxylamine

Raya Ahmed et al.
Cell reports, 33(11), 108501-108501 (2020-12-17)
A central paradigm in the field of lymphocyte biology asserts that replicatively senescent memory T cells express the carbohydrate epitope CD57. These cells nonetheless accumulate with age and expand numerically in response to persistent antigenic stimulation. Here, we use in vivo deuterium
Vicente Ferreira et al.
Journal of chromatography. A, 1122(1-2), 255-265 (2006-05-20)
This work presents a thorough study of some aspects critical to the quantitative performance of methods for the determination of volatile aldehydes previously derivatized to pentafluorobenzyl hydroxylamine oximes. The conclusions of the study are further applied to the validation of
R S Spaulding et al.
Analytical and bioanalytical chemistry, 372(7-8), 808-816 (2002-05-16)
The employment of O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) derivatization along with bis-(trimethylsilyl)trifluoroacetamide (BSTFA) or N, N-( tert-butyldimethylsilyl)trifluoroacetamide (MTBSTFA) derivatization is a popular method for measurement of oxygenated organics in environmental and biological samples. Most notably, the derivatization method enables the measurement of atmospheric
Chunhui Deng et al.
Rapid communications in mass spectrometry : RCM, 19(5), 647-653 (2005-02-09)
In the current work, a simple, rapid, accurate and inexpensive method was developed for the determination of acetone in human blood. The proposed method is based on derivatization with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA), followed by headspace liquid-phase microextraction (HS-LPME) and gas
Chunhui Deng et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 810(2), 269-275 (2004-09-24)
Analysis of breath acetone has been used as a diagnostic tool for diabetes. Due to its nature of volatility and activity, it is very difficult to accurately measure the concentration of acetone in human breath by gas chromatography-mass spectrometry (GC-MS).
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

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