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21620-95-1

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21620-95-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21620-95-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,2 and 0 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21620-95:
(7*2)+(6*1)+(5*6)+(4*2)+(3*0)+(2*9)+(1*5)=81
81 % 10 = 1
So 21620-95-1 is a valid CAS Registry Number.

21620-95-1SDS

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 7-acetoxy-2,3-dihydro-2,2-dimethyl-benzofuran

1.2 Other means of identification

Product number -
Other names 2,3-dihydro-2,2-dimethylbenzofuran-7-yl acetate

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:21620-95-1 SDS

21620-95-1Downstream Products

21620-95-1Relevant articles and documents

Synthesis of 2,3-dihydrobenzofurans by Mn(OAc)3-based oxidative cycloaddition of 2-cyclohexenones with alkenes. Synthesis of (±)-conocarpan

Snider, Barry B.,Han, Luning,Xie, Chaoyu

, p. 6978 - 6984 (2007/10/03)

Oxidative cycloaddition of a 2-cyclohexenone or α-tetralone and an alkene with dried Mn(OAc)3 in benzene at 80-140 °C provides a general route to dihydrobenzofurans 15 and dihydronaphthofurans 17. Although the yields are modest, this one-pot reaction provides simple access to these compounds, which have previously been prepared by multistep routes. Oxidative cycloaddition of 2-cyclohexenones with β-methylstyrenes provides a new route to benzofuranoid neolignans, which was applied to the synthesis of conocarpan (22). The formation of 2-acetoxyhexanedioic acids 27 and 47 from acetoxylation of 2-cyclohexenones in HOAc, but not in benzene, opens up a new class of Mn(OAc)3 reactions and explains Watt and Demir's discovery that much higher yields of α'-acetoxy enones are obtained in benzene than in HOAc.

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