Welcome to LookChem.com Sign In|Join Free

CAS

  • or

199442-68-7

Post Buying Request

199442-68-7 Suppliers

Recommended suppliersmore

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

199442-68-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199442-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,4,4 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 199442-68:
(8*1)+(7*9)+(6*9)+(5*4)+(4*4)+(3*2)+(2*6)+(1*8)=187
187 % 10 = 7
So 199442-68-7 is a valid CAS Registry Number.

199442-68-7Relevant articles and documents

An easy photochemical approach to the synthesis of the food-borne carcinogen 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine

Bavetta, Fabio S.,Caronna, Tullio,Pregnolato, Massimo,Terreni, Marco

, p. 7793 - 7796 (1997)

Mutations induced by substances formed during food cooking are a field of growing interest; for a better comprehension of the mechanism of action of these carcinogens, simple routes to their synthesis are needed. In this letter we describe an easy method for 2-amino-1-methyl-6-phenylimidazo[4,5- b]pyridine (PhIP) synthesis, starling from the commercially available 2,3- diaminopyridine 1 via the 2-amino-3-methylamino-5-phenylpyridine 5 formation. The key step of this approach is the one pot synthesis of 5 performed by photolysis of 2-amino-5-iodo-3-(N-methyl-N-tosylamino)pyridine 4 to obtain simultaneous phenylation and tosyl group removal. Compound 5 was then used as an intermediate to obtain the 1-methyl 6-phenylimidazo[4,5-b]pylidine 6 which was aminated to afford PhIP in good overall yields.

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 199442-68-7