Welcome to LookChem.com Sign In|Join Free

CAS

  • or

21669-34-1

Post Buying Request

21669-34-1 Suppliers

Recommended suppliersmore

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

21669-34-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21669-34-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,6 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21669-34:
(7*2)+(6*1)+(5*6)+(4*6)+(3*9)+(2*3)+(1*4)=111
111 % 10 = 1
So 21669-34-1 is a valid CAS Registry Number.

21669-34-1Relevant articles and documents

Depsidone Synthesis. Part 16. Benzophenone-Grisa-3',5'-diene-2',3-dione-depsidone Interconversion: a New Theory of Depsidone Biosynthesis

Sala, Tony,Sargent, Melvyn V.

, p. 855 - 869 (2007/10/02)

The synthesis of a number of grisa-3',5'-diene-2',3-diones by oxidative coupling of substituted 2,2'-dihydroxy-4-methoxybenzophenones is described.The rearrangement of these grisadienediones to depsidones under basic, acidic, and thermal conditions is des

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 21669-34-1