Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1257405-75-6

Post Buying Request

1257405-75-6 Suppliers

Recommended suppliersmore

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

1257405-75-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257405-75-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,4,0 and 5 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1257405-75:
(9*1)+(8*2)+(7*5)+(6*7)+(5*4)+(4*0)+(3*5)+(2*7)+(1*5)=156
156 % 10 = 6
So 1257405-75-6 is a valid CAS Registry Number.

1257405-75-6Relevant articles and documents

Azidomethyl 4-nitrophenyl carbonate-A reagent for the one-step introduction of the azidomethyloxycarbonyl (Azoc) protecting group

Kaiser, Andreas,Richert, Clemens

experimental part, p. 2267 - 2270 (2010/11/03)

Presented here is the three-step synthesis of azidomethyl 4-nitrophenyl carbonate in 58% overall yield. This carbonate allows for the high-yielding (≥90%) introduction of the phosphine-labile azidomethyloxycarbonyl (Azoc) protecting group in one step. The reagent protects a range of amines, including amino acids. For nonionic substrates, pure carbamates are obtained after extractive workup. Georg Thieme Verlag Stuttgart - New York.

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 1257405-75-6