Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1257324-44-9

Post Buying Request

1257324-44-9 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

1257324-44-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257324-44-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,3,2 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1257324-44:
(9*1)+(8*2)+(7*5)+(6*7)+(5*3)+(4*2)+(3*4)+(2*4)+(1*4)=149
149 % 10 = 9
So 1257324-44-9 is a valid CAS Registry Number.

1257324-44-9Relevant articles and documents

Facile and selective deprotection of PMB ethers and esters using oxalyl chloride

Ilangovan, Andivelu,Anandhan, Karnambaram,Kaushik, Mahabir Prasad

, p. 1081 - 1084 (2015/02/19)

Oxalyl chloride, (0.5 equiv) was found to cleave the PMB group from alkyl, aryl PMB ethers, and esters to give corresponding alcohol and acid in good yields. This method offers simple and efficient protocol for the selective deprotection of PMB ether and ester in DCE at ambient temperature.

High-load, hybrid Si-ROMP reagents

Rolfe, Alan,Loh, Joanna K.,Maity, Pradip K.,Hanson, Paul R.

supporting information; experimental part, p. 4 - 7 (2011/03/22)

The combination of norbornenyl-tagged (Nb-tagged) silica particles and functionalized Nb-tagged monomers for the generation of hybrid Si-ROMP reagents and scavengers is reported. Specifically Si-ROMP-derived bis-acid chloride, dichlorotriazine, and triphenylphosphine scavenger/reagents have been grafted from the surface of silica particles utilizing surface-initiated, ring-opening metathesis polymerization (ROMP). These hybrid polymeric materials combine the physical properties of current immobilized silica reagents and represent a key advancement in load by merging the inherent tunable properties of the ROMP-derived oligomers with silica supports for application in a parallel synthesis.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 1257324-44-9