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157902

Sigma-Aldrich

1,3-Dibrom-5,5-dimethylhydantoin

98%

Synonym(e):

Dibromantin

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About This Item

Empirische Formel (Hill-System):
C5H6Br2N2O2
CAS-Nummer:
77-48-5
Molekulargewicht:
285.92
Beilstein:
146024
EG-Nummer:
201-030-9
MDL-Nummer:
MFCD00003189
UNSPSC-Code:
12352101
PubChem Substanz-ID:
24849707
NACRES:
NA.22
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualitätsniveau

200

Assay

98%

mp (Schmelzpunkt)

197-199 °C (dec.) (lit.)

SMILES String

CC1(C)N(Br)C(=O)N(Br)C1=O

InChI

1S/C5H6Br2N2O2/c1-5(2)3(10)8(6)4(11)9(5)7/h1-2H3

InChIKey

VRLDVERQJMEPIF-UHFFFAOYSA-N

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Anwendung

Useful in aromatic bromination of alkoxybenzoic acids[1] and in bromofluorination of alkenes.[2]

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Ox. Sol. 3 - Skin Corr. 1B - Skin Sens. 1

Lagerklassenschlüssel

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCX1711
MKCW0207
MKCQ7370
MKCM0799
MKCL2765

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N-Bromsuccinimid ReagentPlus®, 99%

Sigma-Aldrich

B81255

N-Bromsuccinimid

Fluorwasserstoffpyridin pyridine ~30 %, hydrogen fluoride ~70 %

Sigma-Aldrich

184225

Fluorwasserstoffpyridin

N-Bromacetamid powder

Sigma-Aldrich

B2377

N-Bromacetamid

M Hilp
Die Pharmazie, 56(7), 548-551 (2001-08-08)
The identification of lactate according to Ph. Eur. 1997 and DAB 2000 uses the oxidation of lactic acid to pyruvic acid by boiling with bromine water in sulphuric acid. Acetaldehyde arising by decarboxylation is detected according to Legal applying a
M Hilp
Die Pharmazie, 57(1), 45-48 (2002-02-12)
PH. EUR. 2002 uses elemental bromine performing iron limit tests for maleic acid (iron 5 ppm) and titanium dioxide (iron 200 ppm). 1,3-Dibromo-5,5-dimethylhydantoin (DBH) can replace bromine water. For the iron limit test of maleic acid bivalent iron is oxidized
Tetrahedron Letters, 34, 931-931 (1993)
Gloria Hernández-Torres et al.
Organic letters, 14(7), 1858-1861 (2012-03-27)
Organocatalytic stereospecific dibromination of a wide variety of functionalized alkenes was achieved using a stable, inexpensive halogen source, 1,3-dibromo 5,5-dimethylhydantoin, and a simple thiourea catalyst at room temperature. The presence of a tertiary amine enhanced the rate of the dibromination
M Hilp
Die Pharmazie, 57(4), 250-251 (2002-05-10)
PH. EUR. 2002 identifies nicotinamid, nicotinic acid, and nikethamide according the reaction of König using cyanogen bromide solution prepared with bromine water and ammonium thiocyanate immediately before use. This colour reaction can be better performed with 1,3-dibromo-5,5-dimethylhydantoin (DBH) and sulphanilic
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Questions

1–2 of 2 Questions  

  1. 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

      Helpful?

  2. 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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