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Spiro[5.5]undecane-1,9-dione, 7,11-diphenyl- is a complex organic compound with the molecular formula C19H18O2. It is characterized by a spiro structure, which consists of two rings connected at a single point, and features two phenyl groups attached to the 7th and 11th carbon atoms. Spiro[5.5]undecane-1,9-dione, 7,11-diphenyl- is known for its unique molecular geometry and potential applications in various chemical and pharmaceutical research areas. Its chemical structure and properties make it an interesting subject for study in organic chemistry, particularly in the context of ring systems and their interactions with other functional groups.

1521-72-8

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1521-72-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1521-72-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,2 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1521-72:
(6*1)+(5*5)+(4*2)+(3*1)+(2*7)+(1*2)=58
58 % 10 = 8
So 1521-72-8 is a valid CAS Registry Number.

1521-72-8SDS

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 1,5-diphenylspiro[5.5]undecane-3,11-dione

1.2 Other means of identification

Product number -
Other names Spiro[5.5]undecane-1,9-dione,7,11-diphenyl

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:1521-72-8 SDS

1521-72-8Downstream Products

1521-72-8Relevant academic research and scientific papers

Stereochemical Investigation of a Phase Transfer Catalysed bis-Michael Spiroannulation Reaction.

Rele, Dinesh N.,Mathur, Hari H.,Trivedi, Girish K.,Chary, K. V. R.

, p. 1055 - 1078 (2007/10/02)

Spiroannulation has been achieved by double Michael reaction under very mild conditions using a phase transfer catalyst.Various cyclohexanone molecules having different steric requirements have been condensed with 1,5-diphenyl-1,4-pentadien-3-one in the presence of cetyltrimethylammonium bromide.This condensation reaction was found to be diastereospecific as well as regiospecific.Stereoisomers derived from homotopic cycloalkanones were found to adopt endo geometry, while diastereotopic cycloalkanones were found to elaborate a mixture of endo and exo diastereomers.These stereochemical inferences are drawn based on extensive 2D-nmr studies employing COSY and NOESY experiments.

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