Welcome to LookChem.com Sign In|Join Free

CAS

  • or

157731-85-6

Post Buying Request

157731-85-6 Suppliers

Recommended suppliersmore

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

157731-85-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157731-85-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,3 and 1 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157731-85:
(8*1)+(7*5)+(6*7)+(5*7)+(4*3)+(3*1)+(2*8)+(1*5)=156
156 % 10 = 6
So 157731-85-6 is a valid CAS Registry Number.

157731-85-6Downstream Products

157731-85-6Relevant articles and documents

Synthesis and Structure-Activity relationships of cephalosporins, 2-isocephems, and 2-oxaisocephems with C-3' or C-7 catechol or related aromatics

Tsuji, Koichi,Tsubouchi, Hidetsugu,Yasumura, Koichi,Matsumoto, Makoto,Ishikawa, Hiroshi

, p. 2135 - 2149 (2007/10/03)

A series of cephalosporins, 2-isocephems, and 2-oxaisocephems with C-3' catechol-containing (pyridinium-4-thio)methyl groups and 2-isocephems with C-7 catechol related aromatics have been prepared and evaluated for antimicrobial activity. It turns out that these compounds have highly potent activity against Gram-negative bacteria, especially resistant pathogens such as Pseudomonas aeruginosa. The most active compound of the series was (6S,7S)-7-[2-(2-aminothiazol-4-yl)-2-[(Z)-[(1,5-dihydroxy- 4-pyridon-2-yl)methoxy]imino]acetamido]-3-[[[(4-methyl-5- carboxymethyl)thiazol-2-yl]thio] methyl]-8-oxo-1-aza-4-thiabicyclo [4.2.0]-aza-4-thiabicyclo [4.2.0] oct-2-ene-2-carboxylic acid which exhibited potent in vitro activity against clinically isolated P. aeruginosa and Acinetobacter baumanii which is also resistant to many anti-infectives, and good in vivo efficacy against clinically isolated P aeruginosa.

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 157731-85-6