Welcome to LookChem.com Sign In|Join Free

CAS

  • or

137734-20-4

Post Buying Request

137734-20-4 Suppliers

Recommended suppliersmore

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

137734-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137734-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,3 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137734-20:
(8*1)+(7*3)+(6*7)+(5*7)+(4*3)+(3*4)+(2*2)+(1*0)=134
134 % 10 = 4
So 137734-20-4 is a valid CAS Registry Number.

137734-20-4Downstream Products

137734-20-4Relevant articles and documents

Chelation Control in the Aldol Reaction of Tetronic Acid. Application to the Synthesis of Pentoses, Arabitol and Ribitol

Honda, Toshio,Hayakawa, Tomohisa,Kondoh, Hirotsune,Okuyama, Akihiko,Tsubuki, Masayoshi

, p. 1861 - 1864 (1991)

The aldol reaction of lithium enolates of tetronates with (R)-2,3-O-cyclohexylideneglyceraldehyde afforded the chelation controlled products stereoselectively.The conversion of the aldol products into arabitol and ribitol was also described.

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 137734-20-4