Crosslinking modified bases are used to stabilize the interaction of two weak covalent bonds. These crosslinking modified oligonucleotide bases are often used in affinity labeling of DNA and RNA binding proteins, interstrand crosslinks between DNA and/or RNA for molecular capturing and photo-induced crosslinking.

contact us for more information on DNA cross linking and Ligation.

Our Advantages

  • Wide selection of modified RNA,DNA bases beyond 5-Mthyl C
  • Flexibility in oligo length and synthesis scales
  • Oligonucleotides are delivered as deprotected, desalted and/or purified
  • Quality checked by MALDI-TOF/LC-MS, analytical HPLC, PAGE
  • Specialize in producing newly-discovered and difficult -to-make modified bases
Product Modification Code 5 Prime Internal 3 Prime
Maleimide [SMCC-Mal] Y Y Y
3-cyanovinylcarbazole [CNVK] Y Y Y
3'-amino dT [3amino-dT] N N Y
Psoralen C6 [Psoralen C6] Y Y Y
Psoralen C2 [Psoralen C2] Y Y Y
4-Thio-dU [4-Thio-dU] Y Y Y
3'-Progagyl-5-Me-dC 3-Prg-5-Me dC] N N Y
5-Br-dU [5-Br-dU] Y Y Y
5'-I-dT [5-I-dT] Y N N
5-I-dU [5-I-dU] Y Y Y
5-I-dC [5-I-dC] Y Y Y
5-Br-dC [5-Br-dC] Y Y Y
6-Thio-dG [6-Thio-dG] Y Y Y
2-Thio-dT [2-Thio-dT] Y Y Y
4-Thio-dT [4-Thio-dT] Y Y Y
8-Br-dG [8-Br-dG] Y Y Y
8-Br-dA [8-Br-dA] Y Y Y
2’-deoxy pseudo U [Psd-rU] Y Y Y
Bromo-U [Br-U] Y Y Y
2-Aminopurine [2AmPr] Y Y Y
5-F-dU [5-F-dU] Y Y Y
2’-OMe-2,6-Diaminopurine [2OMeDAMP] Y Y Y
2’-OMe-5-F-U [5-F-mU] Y Y Y
2’-OMe-5-Me-U [mT] or [5-Me-mU] Y Y Y
2’-OMe-5-Me-C [5-Me-mC] Y Y Y
2’-OMe-I [mI] Y Y Y
2’-OMe-5-Br-U [5-Br-mU] Y Y Y
2’-OMe-TMP-5-F-U [TMP-5-F-mU] Y Y Y
2’-OMe-2-AminoPurine [2AM-mPr] Y Y Y

Quality Control: Analytical HPLC, Gel eletrophoresis, and  MALDI-TOF Mass Spectrometry

Delivery times: 5-7 Working days

Packaging:    Dried

Shipping conditions: Room temperature

Storage conditions: -20 oC to -70 oC

Oligonucleotides are stable in solution at 4 oC for up to 2 weeks. Properly reconstituted material stored at -20 oC should be stable for at least 6 months. Dried DNA (when kept at -20 oC) in a nuclease-free environment should be stable for years.

Ordering & Contact Information

  • Please contact us for additional information or send an email to info@biosyn.com.
  • You may also request an online quote.
  • To contact us by phone, please Call 972-420-8505 (USA) 800-227-0627 (INTL.) or Fax 972.420.0442
  • Orders may be placed using a purchase order (PO) or by credit card through our secure online ordering system.
  • When using a credit card ( creditcard ) it will be billed under "Bio-Synthesis, Inc."