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81741-69-7

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81741-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81741-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,4 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81741-69:
(7*8)+(6*1)+(5*7)+(4*4)+(3*1)+(2*6)+(1*9)=137
137 % 10 = 7
So 81741-69-7 is a valid CAS Registry Number.
InChI:InChI=1/C14H9NO/c16-9-15-12-5-6-14-11(8-12)7-10-3-1-2-4-13(10)14/h1-6,8H,7H2

81741-69-7 Well-known Company Product Price

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  • Aldrich

  • (511862)  9H-Fluoren-2-ylisocyanate  98%

  • 81741-69-7

  • 511862-5G

  • 1,731.60CNY

  • Detail

81741-69-7SDS

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-isocyanato-9H-fluorene

1.2 Other means of identification

Product number -
Other names 2-fluoreneisocyanate

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:81741-69-7 SDS

81741-69-7Relevant articles and documents

Postpolymerization modification of hydroxyl-functionalized polymers with isocyanates

Biedermann, Frank,Appel, Eric A.,Del Barrio, Jesus,Gruendling, Till,Barner-Kowollik, Christopher,Scherman, Oren A.

experimental part, p. 4828 - 4835 (2012/05/20)

The postpolymerization functionalization of hydroxyl-group terminated polymers (Mn in the range of 1000-6000 g mol-1) such as poly(ethylene glycol) (PEG), poly(N-isopropylacrylamide) (PNIPAM), poly(N,N-dimethylacrylamide) (PDMAM), and poly(tert-butyl acrylate) (PtBA) with a wide range of functional isocyanate derivatives such as azobenzene, viologen, and anthracene has been investigated. It was shown by 1H and 13C NMR, GPC, Fourier transform infrared spectroscopy (FTIR), and electrospray ionization mass spectrometry (ESI-MS) that a high degree of end-group conversion, typically >98%, with little or no formation of side products can be achieved at ambient temperature. PNIPAM, PDMAM, PtBA, and PHEAM polymers have been obtained by reversible addition-fragmentation chain transfer (RAFT) radical polymerization from a hydroxyl-group containing chain transfer agent (CTA). The formation of the carbamate has been shown to be compatible with the trithiocarbonate end-group of the RAFT polymers. Additionally, this approach allows for the direct functionalization of RAFT polymers without the need of additional steps such as deprotection or aminolysis of the CTA. This route was subsequently used for the preparation of a variety of side-chain functional polymers from poly(N-hydroxyethyl acrylamide) (PHEAM). Three different high yielding methods have been employed to prepare the isocyanates (R-NCO). Either amino or carboxylic acid precursors have been converted into the desired R-NCO or hydroxyl group moieties have been reacted with an excess of 1,6-hexamethylene diisocyanate (HDI) to statistically form the monofunctional product.

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