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4H-1-Benzopyran, 4a,5,6,7,8,8a-hexahydro-2,5,5,8a-tetramethyl-, cis- is a complex organic compound belonging to the class of benzopyrans. It is characterized by a benzene ring fused to a pyran ring, with a hexahydro structure indicating the presence of six hydrogen atoms attached to the carbon backbone. The compound features four methyl groups (CH3) at positions 2, 5, 5, and 8a, and the cis- configuration refers to the geometric arrangement of these substituents around the double bond, indicating that they are on the same side of the molecule. This specific arrangement can significantly influence the compound's physical and chemical properties, such as its reactivity, polarity, and potential biological activity.

6136-74-9

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6136-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6136-74-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,3 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6136-74:
(6*6)+(5*1)+(4*3)+(3*6)+(2*7)+(1*4)=89
89 % 10 = 9
So 6136-74-9 is a valid CAS Registry Number.

6136-74-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name (+/-)-2,5,5,8a-tetramethyl-trans-4a,5,6,7,8,8a-hexahydro-4H-chromene

1.2 Other means of identification

Product number -
Other names (+/-)-2,5,5,8a-Tetramethyl-trans-4a,5,6,7,8,8a-hexahydro-4H-chromen

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:6136-74-9 SDS

6136-74-9Downstream Products

6136-74-9Relevant academic research and scientific papers

Chlorosulfonic acid as a convenient electrophilic olefin cyclization agent

Linares-Palomino, Pablo J.,Salido, Sofía,Altarejos, Joaquín,Sánchez, Adolfo

, p. 6651 - 6655 (2007/10/03)

Among several sulfonic acids studied (MeSO3H, p-TsOH, H2SO4, ClSO3H, FSO3H), the scarcely used chlorosulfonic acid showed to be an efficient agent for electrophilic olefin cyclizations with internal nucleophilic termination, in a similar manner that is well-established with fluorosulfonic acid. Its availability, lower price and relatively lesser handling problems makes ClSO3H an advantageous cyclizing agent particularly for high-scale applications. The stereochemical outcome of these cyclizations has been rationalized.

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