Welcome to LookChem.com Sign In|Join Free

CAS

  • or

21858-17-3

Post Buying Request

21858-17-3 Suppliers

Recommended suppliersmore

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

21858-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21858-17-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21858-17:
(7*2)+(6*1)+(5*8)+(4*5)+(3*8)+(2*1)+(1*7)=113
113 % 10 = 3
So 21858-17-3 is a valid CAS Registry Number.

21858-17-3Relevant articles and documents

Asymmetric synthesis of O-methylneferine

Nishimura, Katsumi,Horii, Shinji,Tanahashi, Takao

, p. 865 - 876 (2019/04/26)

Diastereoselective Pictet-Spengler reaction of 2-arylethylamine bearing an N-(R)-1-(1-naphthyl)ethylcarbamoyl group with arylacetaldehyde gave 1-benzyltetrahydroisoquinoline in good yield with moderate diastereoselectivity. The reaction was applied to asymmetric synthesis of O-methyl derivative of neferine, an alkaloid of the lotus embryo, Nelumbo nucifera Gaertner.

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 21858-17-3