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B8681

Sigma-Aldrich

Benzoin

98%

Synonym(s):

α-Hydroxy-α-phenylacetophenone, α-Hydroxybenzyl phenyl ketone, 2-Hydroxy-2-phenylacetophenone

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About This Item

Linear Formula:
C6H5CH(OH)COC6H5
CAS Number:
119-53-9
Molecular Weight:
212.24
Beilstein:
391839
EC Number:
204-331-3
MDL number:
MFCD00004496
UNSPSC Code:
12162002
PubChem Substance ID:
24892088
NACRES:
NA.23
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Quality Level

100

Assay

98%

form

powder

bp

194 °C/12 mmHg (lit.)

mp

134-138 °C (lit.)

SMILES string

OC(c1ccccc1)C(=O)c2ccccc2

InChI

1S/C14H12O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10,13,15H

InChI key

ISAOCJYIOMOJEB-UHFFFAOYSA-N

Gene Information

human ... ACHE(43) , BCHE(590) , CES1(1066)

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General description

Benzoin is an industrially important chemical that is used as an intermediate in the synthesis of different chemical additives, dyestuff, pharmaceuticals and also as a photoinitiator.[1]

Application

Benzoin may be used as a photoinitiator in the synthesis of biocompatible and degradable hydrogels based on 2-hydroxyethyl (meth)acrylates and gelatin via combined microwave-assisted and photo-polymerization technique.[2]

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

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
STBL3756
STBK8476
STBK5421
STBJ9925
STBJ3627

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trans-1,4-Diphenyl-2-butene-1,4-dione 96%

Sigma-Aldrich

D33209

trans-1,4-Diphenyl-2-butene-1,4-dione

The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth) acrylate/gelatin based scaffolds.
Babic MM, et al.
Materials Letters, 213, 236-240 (2018)
Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin.
Sun X, et al.
Applied Catalysis. B, Environmental, 220, 553-560 (2018)
Javier Izquierdo et al.
Angewandte Chemie (International ed. in English), 51(47), 11686-11698 (2012-10-18)
N-Heterocyclic carbene (NHC) catalyzed transformations have emerged as powerful tactics for the construction of complex molecules. Since Stetter's report in 1975 of the total synthesis of cis-jasmon and dihydrojasmon by using carbene catalysis, the use of NHCs in total synthesis
Structures and reactivities of O-methylated Breslow intermediates.
Biplab Maji et al.
Angewandte Chemie (International ed. in English), 51(41), 10408-10412 (2012-09-13)
Qiu-Fen Hu et al.
Journal of natural products, 76(10), 1854-1859 (2013-09-26)
Eight new C-4-alkylated deoxybenzoins (1-8), three new diphenylethylenes (9-11), and five known diphenylethylenes were isolated from Arundina graminifolia. The structures of 1-11 were elucidated by spectroscopic methods including extensive 1D and 2D NMR techniques. Compounds 9-11 are the first naturally
View All Related Papers

Questions

1–2 of 2 Questions  

  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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