Welcome to LookChem.com Sign In|Join Free

CAS

  • or

153434-31-2

Post Buying Request

153434-31-2 Suppliers

Recommended suppliersmore

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

153434-31-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 153434-31-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,4,3 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 153434-31:
(8*1)+(7*5)+(6*3)+(5*4)+(4*3)+(3*4)+(2*3)+(1*1)=112
112 % 10 = 2
So 153434-31-2 is a valid CAS Registry Number.

153434-31-2Downstream Products

153434-31-2Relevant articles and documents

Phosphotriesters Approach to the Synthesis of Oligonucleotides: A Reappraisal

Reese, Colin B.,Pei-Zhuo, Zhang

, p. 2291 - 2302 (2007/10/02)

The phosphotriester approach to the synthesis of oligodeoxyribo- and oligoribo-nucleotides in solution has been reinvestigated.The efficacy of mesitylene-2-sulfonyl chloride (MSCl) 15a, 2,4,6-triisopropylbenzenesulfonyl chloride (TrisCl) 15b, 4-bromobenzenesulfonyl chloride 15c, naphthalene-1-sulfonyl chloride 39, and 2- and 4-nitrobenzenesulfonyl chlorides 40a and 40b, respectively, as activating agents has been examined.The latter arenesulfonyl chlorides have been used in conjunction with the following nucleophilic catalysts: 1-methylimidazole, 3-nitro-1H-1,2,4-triazole 19, 5-(3-nitrophenyl)-1H-tetrazole 20a, 5-(3,5-dinitrophenyl)-1H-tetrazole 20b, 5-(1-methylimidazol-2-yl)-1H-tetrazole 21, 5--1H-tetrazole 22, 4-ethoxypyridine 1-oxide 14a, 4,6-dinitro-1-hydroxybenzotriazole 29a, 1-hydroxy-4-nitro-6-(trifluoromethyl)benzotriazole 29b, 1-hydroxy-5-phenyltetrazole 30a and 1-hydroxy-5-(3-nitrophenyl)tetrazole 30b.The rates of formation and yields of the fully protected dideoxyribonucleoside and diribonucleoside phosphates 37 and 47, respectively, were determined using various combinations of activating agents and nucleophilic catalysts.Although 2- and 4-nitrobenzenesulfonyl chlorides 40a and 40b, respectively, proved to be the most powerful activating agents, their use in the deoxy-series led to the formation of by-products and hence to unsatisfactory isolated yields of the dideoxyribonucleoside phosphate 37.

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 153434-31-2