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28281-58-5

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28281-58-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28281-58-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,2,8 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 28281-58:
(7*2)+(6*8)+(5*2)+(4*8)+(3*1)+(2*5)+(1*8)=125
125 % 10 = 5
So 28281-58-5 is a valid CAS Registry Number.

28281-58-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 7-methoxy-3H-2-benzofuran-1-one

1.2 Other means of identification

Product number -
Other names 7-METHOXY-1(3H)-ISOBENZOFURANONE

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:28281-58-5 SDS

28281-58-5Relevant academic research and scientific papers

Combining Photodeprotection and Ligation into a Dual-Color Gated Reaction System

Alves, Jessica,Krappitz, Tim,Feist, Florian,Blinco, James P.,Barner-Kowollik, Christopher

, p. 16985 - 16989 (2020)

We report a photochemical reaction system which requires activation by two colors of light. Specifically, a dual wavelength gated system is established by fusing the visible light mediated deprotection of a dithioacetal with the UV light activated Diels–A

Directed regioselective lithiation of (η6-arene) chromium tricarbonyl complexes. Regioselective synthesis of anthraquinones and calamenenes

Uemura, Motokazu,Take, Kazuhiko,Isobe, Kazuo,Minami, Tatsuya,Hayashi, Yuji

, p. 5771 - 5778 (1985)

(3-Methoxybenzylalcohol)chromium tricarbonyl (10) and (7-methoxy-1-tetralol)chromium tricarbonyl (12) are selectively lithiated at the 4- and 6-positions, respectively, by treatment with n-BuLi-TMEDA. Since the directed lithiation of the corresponding chromium free arenes normally proceeds at the 2-and 8-positions, complementarily substituted arenes can be prepared by using the chromium tricarbonyl complexes. The difierent position of lithiation is explained by the relative configuration of the chromium tricarbonyl group in the (arene)Cr(CO)3 and electrostatic factors. Some anthraquinones, 31,36,42, and 7-hydroxycalamenenes, 43, have been synthesized through the stereo- and regioselective introduction of substituents by means of(η6-arene)chromium tricarbonyl complexes.

Assessment of the regioselectivity in the condensation reaction of unsymmetrical o-phthaldialdehydes with alanine

D'Hollander, Agathe C.A.,Westwood, Nicholas J.

supporting information, p. 224 - 239 (2017/12/08)

One approach for the synthesis of isoindolinones, a privileged bioactive heterocyclic core structure, involves a condensation reaction of o-phthaldialdehydes with a suitable nitrogen-containing nucleophile. This fascinating reaction is revisited here in the context of the use of o-phthaldialdehydes that contain additional substituents in the aromatic ring leading to a detailed analysis of the regioselectivity of the reaction. Eleven monosubstituted o-phthaldialdehydes were synthesised and reacted with alanine. The regioselectivity observed across the eleven substrates led to the design of a disubstituted substrate that reacted with very high control. A gram-scale reaction followed by esterification gave one major regioisomer in high yield. In addition, the regioselectivity observed on reaction of two novel monodeuterated substrates led to an increased mechanistic understanding.

Regiocontrolled rearrangement of isobenzofurans

Egan, Ben A.,Paradowski, Michael,Thomas, Lynne H.,Marquez, Rodolfo

supporting information; experimental part, p. 2086 - 2089 (2011/06/25)

Regioselective alkylation and oxidative rearrangement of isobenzofurans has been achieved to generate substituted 4,8- ihydroxyisochromanones in good yields and with complete regiocontrol.

Stereoselective total synthesis of (+)-varitriol

Srinivas,Sridhar,Rao, K. Rama

scheme or table, p. 8527 - 8535 (2010/11/18)

Stereoselective total synthesis of (+)-varitriol, an antitumor natural product, was accomplished by two versatile strategies starting from the commercially available d-(-)-ribose and ethyl (S)-lactate. The key steps involved in the synthesis of the target molecule are epoxidation, cyclization, dihydroxylation and Diels-Alder reaction.

INDOLYLMALEIMIDE DERIVATIVES

-

Page/Page column 50-51, (2008/06/13)

A compound of formula (I) wherein R, R1, and R2, ring A and ring B are as defined in the specification, processes for their production, their uses, in particular in transplantation, and pharmaceutical compositions containing them.

Studies toward the total synthesis of mumbaistatin, a highly potent glucose-6-phosphate translocase inhibitor. Synthesis of a mumbaistatin analogue

Kaiser, Florian,Schwink, Lothar,Velder, Janna,Schmalz, Hans-Guenther

, p. 9248 - 9256 (2007/10/03)

A strategy for the total synthesis of the highly potent glucose-6-phosphate translocase inhibitor mumbaistatin (1) and structural analogues was elaborated. Such compounds represent a lead structure in the development of potential new drugs for the treatment of diabetes. To evaluate the general strategy, the close mumbaistatin analogue 10 was synthesized in a convergent manner. The anthraquinone building block 20 was efficiently prepared via aryne/phthalide annulation. After conversion of 20 into the corresponding 9,10-dimethoxyanthracene-1-carbaldehyde derivative (13), coupling with a lithiated arene (12) and subsequent multiple oxidation under Jones conditions yielded the mumbaistatin analogue 10. The preparation of the functionalized arene intermediates was achieved exploiting highly regioselective bromination and ortho-lithiation reactions.

Synthesis of phosphonate 3-phthalidyl esters as prodrugs for potential intracellular delivery of phosphonates

Dang, Qun,Brown, Brian S.,Van Poelje, Paul D.,Colby, Timothy J.,Erion, Mark D.

, p. 1505 - 1510 (2007/10/03)

A new prodrug approach for intracellular delivery of phosphonates was developed via the synthesis of 3-phthalidyl esters of 1- naphthalenemethylphosphonate. This approach is advantageous over the traditional acyloxymethyl phosphonate prodrugs, because the

Trisubstituted benzene leukotriene B4 receptor antagonists: Synthesis and structure-activity relationships

Konno, Mitoshi,Nakae, Takahiko,Sakuyama, Shigeru,Odagaki, Yoshihiko,Nakai, Hisao,Hamanaka, Nobuyuki

, p. 1649 - 1674 (2007/10/03)

A series of trisubstituted benzenes which demonstrate leukotriene B4 (LTB4, 1) receptor affinity was prepared. Previous trisubstituted benzenes from our laboratory showed high affinity to the LTB4 receptor but demonstrated

Studies on Carboxylation of Alkoxy-Substituted Benzyl Alcohols via Direct Lithiation and Bromine-Lithium Exchange: Synthesis of Phthalides and Phthalideisoquinoline Alkaloids

Orito, Kazuhiko,Miyazawa, Mamoru,Suginome, Hiroshi

, p. 2489 - 2496 (2007/10/02)

Conversion of alkoxy-substituted benzyl alcohols to the corresponding phthalides by carboxylation via ortho lithiation and bromine-lithium exchange was studied.The method was applied to the key step in the synthesis of phthalideisoquinoline alkaloids.

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