Welcome to LookChem.com Sign In|Join Free

CAS

  • or

42512-59-4

Post Buying Request

42512-59-4 Suppliers

Recommended suppliersmore

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

42512-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42512-59-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,1 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 42512-59:
(7*4)+(6*2)+(5*5)+(4*1)+(3*2)+(2*5)+(1*9)=94
94 % 10 = 4
So 42512-59-4 is a valid CAS Registry Number.

42512-59-4Relevant articles and documents

Synthesis of five- and six-membered dihalogenated heterocyclic compounds by electrophile-triggered cyclization

Ji, Ke-Gong,Zhu, Hai-Tao,Yang, Fang,Shaukat, Ali,Xia, Xiao-Feng,Yang, Yan-Fang,Liu, Xue-Yuan,Liang, Yong-Min

, p. 5670 - 5678 (2010)

Highly substituted dihalogenated dihydrofurans, dihydropyrroles, and dihydro-2H-pyrans bearing alkyl, vinyl, aryl, and heteroaryl moieties can be prepared in good to excellent yields (up to 99%) by allowing 1,4-butyne-diol, 4-aminobut-2-yn-1-ol, and pent-2-yne-1,5-diol derivatives to react with different electrophiles (I2, IBr, and ICl) at room temperature. Both halogen atoms generated from electrophiles were used effectively. The resulting halides can be further exploited by using palladium-catalyzed coupling reactions. The presence of trace amount of water is essential for this electrophilic cyclization.

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 42512-59-4