Welcome to LookChem.com Sign In|Join Free

CAS

  • or

57620-66-3

Post Buying Request

57620-66-3 Suppliers

Recommended suppliersmore

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

57620-66-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57620-66-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,2 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57620-66:
(7*5)+(6*7)+(5*6)+(4*2)+(3*0)+(2*6)+(1*6)=133
133 % 10 = 3
So 57620-66-3 is a valid CAS Registry Number.

57620-66-3Relevant articles and documents

Total synthesis of (R, R, R)-γ-tocopherol through cu-catalyzed asymmetric 1,2-addition

Wu, Zhongtao,Harutyunyan, Syuzanna R.,Minnaard, Adriaan J.

supporting information, p. 14250 - 14255 (2015/03/18)

Based on the asymmetric copper-catalyzed 1,2-addition of Grignard reagents to ketones, (R, R, R)-γ-tocopherol has been synthesized in 36% yield over 12 steps (longest linear sequence). The chiral center in the chroman ring was constructed with 73% ee by the 1,2-addition of a phytol-derived Grignard reagent to an a-bromo enone prepared from 2,3-dimethylquinone.

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 57620-66-3