Welcome to LookChem.com Sign In|Join Free

CAS

  • or

187674-15-3

Post Buying Request

187674-15-3 Suppliers

Recommended suppliersmore

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

187674-15-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187674-15-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,6,7 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 187674-15:
(8*1)+(7*8)+(6*7)+(5*6)+(4*7)+(3*4)+(2*1)+(1*5)=183
183 % 10 = 3
So 187674-15-3 is a valid CAS Registry Number.

187674-15-3Relevant articles and documents

Nucleotides. Part L. Aglycone protection by the (2-dansylethoxy)carbonyl (= {2-{5-(dimethylamino)naphthalen-1-yl]sulfonyl}ethoxy}carbonyl; dnseoc) group - A new variation in oligodeoxyribonucleoside synthesis

Wagner,Pfleiderer

, p. 200 - 212 (2007/10/03)

The (2-dansylethoxy)carbonyl (= {2-{[5-(dimethylamino)naphthalen-1-yl]sulfonyl}ethoxy}carbonyl; dnseoc) group was employed for protection of the amino functions of the aglycone residues. The lactam function of 2'-deoxyguanosine was on the one hand unprotected and on the other hand alkylated at O6 of the aglycone with the 2-(4-nitrophenyl)ethyl (npe) and 2-(phenylsulfonyl)ethyl (pse) group, respectively. The syntheses of monomeric building blocks, both phosphoramidites and nucleoside-functionalized supports, are described for the three common 2'-deoxynucleosides (2'-deoxycytidine, 2'-deoxyadenosine, 2'-deoxyguanosine). As kinetic studies with the tritylated nucleosides showed, the dnseoc group is more labile towards DBU cleavage than the corresponding 2-(4-nitrophenyl)ethyl-(npe) and [2-(4-nitrophenyl)ethoxy]carbonyl(npeoc)-protected analogues. These results were confirmed by the very fast deprotection rate of the dnseoc groups at some oligonucleotides.

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 187674-15-3