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1H-2-Benzopyran-1-one, 3,4-dihydro-5,8-dihydroxy-3-methyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

84213-08-1

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84213-08-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84213-08-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,2,1 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 84213-08:
(7*8)+(6*4)+(5*2)+(4*1)+(3*3)+(2*0)+(1*8)=111
111 % 10 = 1
So 84213-08-1 is a valid CAS Registry Number.

84213-08-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 3,4-dihydro-5,8-dihydroxy-3-methylisocoumarin

1.2 Other means of identification

Product number -
Other names 5-hydroxymellein

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:84213-08-1 SDS

84213-08-1Upstream product

84213-08-1Relevant academic research and scientific papers

An Investigation into the Regioselectivity of the Acid Catalysed Claisen Rearrangement of Methyl 4- and 5-Allyloxy-2-hydroxybenzoate and Derivatives

Harwood, Laurence M.

, p. 530 - 532 (2007/10/02)

The observed products from the acid catalysed Claisen rearrangement of the methyl esters (1c-g) indicate that, unlike the thermal reaction, regiochemical control is independent of internal hydrogen bonding.

Trifluoroacetic Acid Catalysed Claisen Rearrangement of 5-Allyloxy-2-hydroxybenzoic Acid and Esters: an Efficient Synthesis of (+/-)-Mellein

Harwood, Laurence M.

, p. 1120 - 1122 (2007/10/02)

5-Allyloxy-2-hydroxybenzoic acid (1a) and the esters (1b - f) in refluxing trifluoroacetic acid are smoothly converted into 3,4-dihydro-5,8-dihydroxy-3-methylisocoumarin (3) and the corresponding 4-alkoxycarbonyl-2,3-dihydro-5-hydroxy-2-methylbenzofurans (4a - f) via regioselective Claisen rearrangement to the 6-position of the aromatic nucleus with subsequent acid catalysed cyclisation.

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