16691-79-5

• 

• Basic information

  1. Product Name: 2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE
  2. Synonyms: bismethoxycarbonyldiphenylcyclopentadienone;DIMETHYL 3,4-DIPHENYLCYCLOPENTADIENONE-2,5-DICARBOXYLATE;2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE;3,4-DIPHENYLCYCLOPENTADIENONE-2,5-DICARBOXYLIC ACID DIMETHYL ESTER;Dimethyl 3,4-Diphenylcyclopentadienone-2,5-dicarboxylate 3,4-Diphenylcyclopentadienone-2,5-dicarboxylic Acid Dimethyl Ester;Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate
  3. CAS NO:16691-79-5
  4. Molecular Formula: C₂₁H₁₆O₅
  5. Molecular Weight: 348.35
  6. EINECS: N/A
  7. Product Categories: N/A
  8. Mol File: 16691-79-5.mol
  9. Article Data: 3

• Chemical Properties

  1. Melting Point: 175 °C
  2. Boiling Point: 445.4°C at 760 mmHg
  3. Flash Point: 194.3°C
  4. Appearance: /
  5. Density: 1.302g/cm³
  6. Vapor Pressure: 3.96E-08mmHg at 25°C
  7. Refractive Index: 1.613
  8. Storage Temp.: N/A
  9. Solubility: N/A
  10. CAS DataBase Reference: 2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(CAS DataBase Reference)
  11. NIST Chemistry Reference: 2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)
  12. EPA Substance Registry System: 2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)

• Safety Data

  1. Hazard Codes: N/A
  2. Statements: N/A
  3. Safety Statements: N/A
  4. WGK Germany:
  5. RTECS:
  6. HazardClass: N/A
  7. PackingGroup: N/A
  8. Hazardous Substances Data: 16691-79-5(Hazardous Substances Data)

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• 3,5-Cyclopentadiene-1,3-dicarboxylicacid, 2-oxo-4,5-diphenyl-, dimethyl ester

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• 2,5-Bis(Methoxycarbonyl)-3,4-diphenylcyclopentadienone

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• Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate

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• 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylic acid dimethyl ester

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16691-79-5 Usage

General Description

2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone is a complex organic compound. It belongs to the class of chemical structures called cyclopentadienones, which are a type of carbocyclic compounds. Its structure consists of 2 methoxycarbonyl groups, and it is substituted at positions 3 and 4 with phenyl groups. Its systematic chemical name is 2,5-dimethoxycarbonyl-3,4-diphenylcyclopentadienone. Its molecular formula is C23H18O4. Specific information about its physical and chemical properties such as density, boiling point, solubility, and other safety considerations may vary depending on production methods and purity of the sample.

Check Digit Verification of cas no

The CAS Registry Mumber 16691-79-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,9 and 1 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16691-79:
(7*1)+(6*6)+(5*6)+(4*9)+(3*1)+(2*7)+(1*9)=135
135 % 10 = 5
So 16691-79-5 is a valid CAS Registry Number.

InChI:InChI=1/C21H16O5/c1-25-20(23)17-15(13-9-5-3-6-10-13)16(14-11-7-4-8-12-14)18(19(17)22)21(24)26-2/h3-12H,1-2H3

16691-79-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name	dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate

1.2 Other means of identification

Product number	-
Other names	3,4-Diphenylcyclopentadienone-2,5-dicarboxylic Acid Dimethyl Ester

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:16691-79-5 SDS

16691-79-5Upstream product

• 134-81-6 benzil 
• 1830-54-2 3-oxopentanedioic acid dimethyl ester 
• 35044-04-3 5-Hydroxy-2-methoxy-4,5-diphenyl-cyclopenta-1,3-diene-1,3-dicarboxylic acid dimethyl ester 
• 16691-78-4 2,5-dimethoxycarbonyl-4-hydroxy-3,4-diphenylcyclopentene-2-one 

16691-79-5Downstream Products

• 71637-63-3 4-oxo-3,6,6a-triphenyl-(6ac)-4,6a-dihydro-cyclopenta[d]isoxazol-3ar,5-dicarboxylic acid dimethyl ester 
• 35044-02-1 5-Ethoxy-2-hydroxy-4,5-diphenyl-cyclopenta-1,3-diene-1,3-dicarboxylic acid dimethyl ester 
• 71637-65-5 4-oxo-6,6a-diphenyl-3-p-tolyl-(6ac)-4,6a-dihydro-cyclopenta[d]isoxazol-3ar,5-dicarboxylic acid dimethyl ester 
• 74674-57-0 (1R,2S,8R,9S)-12-Oxo-10,11-diphenyl-5-oxa-tricyclo[7.2.1.0^2,8]dodeca-3,6,10-triene-1,9-dicarboxylic acid dimethyl ester 
• 74674-56-9 (1R,2S,5R,6S)-12-Oxo-3,4-diphenyl-11-oxa-tricyclo[4.4.1.1^2,5]dodeca-3,7,9-triene-2,5-dicarboxylic acid dimethyl ester 
• 78048-32-5 (1S,4R,5S)-5-(4-Nitro-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 78048-32-5 (1S,4R,5R)-5-(4-Nitro-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 119867-38-8 (1S,4R,5R)-5-But-3-enyl-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 119867-42-4 (1S,4R,5R)-5-Allyloxymethyl-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 119867-43-5 (1S,4R,5R)-5-Allylsulfanylmethyl-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 78048-31-4 (1S,4R,5S)-5-(4-Cyano-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 78048-31-4 (1S,4R,5R)-5-(4-Cyano-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 
• 72033-24-0 (2R,5S)-11,12-Dioxo-3,4-diphenyl-tricyclo[4.4.1.1^2,5]dodeca-3,7,9-triene-2,5-dicarboxylic acid dimethyl ester 
• 128333-08-4 5-Methyl-5-(4-nitro-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester 

16691-79-5Relevant articles and documents

Synthesis, Molecular Packing, and Thin Film Transistors of Dibenzo[a,m]rubicenes

Gu, Xiao,Xu, Xiaomin,Li, Huiyan,Liu, Zhifeng,Miao, Qian

supporting information, p. 16203 - 16208 (2016/01/15)

We herein report an efficient synthesis of dibenzo[a,m]rubicene, a new member of nonplanar cyclopenta-fused polycyclic aromatic hydrocarbon, and its derivatives. It is found that the conformation and molecular packing of dibenzo[a,m]rubicenes in the solid

One pot synthesis of 1,4-dicarboxymethyl-2,3-diphenylnaphthalene

Mallakpour, Shadpour E.

, p. 354 - 356 (2007/10/03)

Benzene 2 from aprotic diazotization of anthranilic acid 1 with isoamylnitrite and subsequent thermal decomposition of the resulted benzenediazonium-2-carboxylate (in situ), has been reacted with 2,5-dicarbomethoxy-3,4-diphenylcyclopentadienone 3 in 1,2-d

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