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The term "3a,4,6a-tetrahydro-" refers to a specific type of chemical structure, where the prefix "tetrahydro-" indicates the presence of four hydrogen atoms added to a parent hydrocarbon molecule. In this context, the numbers "3a,4,6a" specify the positions of these hydrogen atoms within the molecule's structure. This type of chemical nomenclature is used to describe the arrangement of atoms in a compound, particularly in the field of organic chemistry. The "3a,4,6a" positions suggest that the hydrogen atoms are added to the molecule at these specific locations, which can significantly affect the compound's properties and reactivity. This structural detail is crucial for understanding the compound's behavior in chemical reactions and its potential applications in various fields, such as pharmaceuticals, materials science, and chemical engineering.

5650-67-9

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5650-67-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5650-67-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,5 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5650-67:
(6*5)+(5*6)+(4*5)+(3*0)+(2*6)+(1*7)=99
99 % 10 = 9
So 5650-67-9 is a valid CAS Registry Number.

5650-67-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 3,3a,4,6a-tetrahydro-2H-cyclopenta[b]furan-2-one

1.2 Other means of identification

Product number -
Other names cyclopent-3-ene-2-ol-1-acetic acid lactone

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:5650-67-9 SDS

5650-67-9Relevant academic research and scientific papers

SYNTHESIS OF UNSATURATED BICYCLIC LACTONES AND ACETALS VIA PALLADIUM-PROMOTED CYCLIZATION OF CYCLIC ALLYLIC ALCOHOLS

Larock, Richard C.,Stinn, Dean E.

, p. 2767 - 2770 (2007/10/02)

Unsaturated bicyclic lactones are readily prepared by converting cyclic allylic alcohols to the corresponding α-chloromercurio acetate esters and reacting them with Li2PdCl4.The corresponding acetals can be synthesized directly by reaction of the allylic

TOSYLOXYLACTONIZATION OF ALKENOIC ACIDS WITH BENZENE

Shah, Mayur,Taschner, Michael J.,Koser, Gerald F.,Rach, Nancy L.

, p. 4557 - 4560 (2007/10/02)

benzene(1) reacts with 3-butenoic, 4-pentenoic, 5-hexenoic and 2-methyl-4-pentenoic acids in CH2Cl2 to give tosyloxyacetones and with trans-3-hexenoic and 2-cyclopenteneacetic acids to give unsaturated lactones. 5-Norbornene-endo-2-carboxylic acid with 1 gives a rearranged lactone while 5-norbornene-endo-2,3-dicarboxylic acid gives a bis-lactone.

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