Catalog Number: 5342
Chemical Name: 2,3-Dihydro-6,7-diphenyl-2-thioxo-4(1H)-pteridinone
Biological Activity
Enhances CRISPR-Cas9-mediated homology-directed repair (HDR) efficiency in vitro up to 19-fold. Inhibits nonhomologous end-joining (NHEJ).

We have discovered that the commercially available SCR7 material supplied by other vendors does not match the chemical structure that it is being sold under. Through detailed chemical analysis carried out by our Analytical Quality Control experts, we believe that the commercially available SCR7 material, including that used in recent publications to enhance CRISPR efficiency, is in fact an analog of SCR7 that we have named 'SCR7 pyrazine'.

View more information regarding the structure of SCR7.

Technical Data
  • M.Wt:
    332.38
  • Formula:
    C18H12N4OS
  • Solubility:
    Soluble to 100 mM in DMSO and to 20 mM in ethanol
  • Purity:
    >98%
  • Storage:
    Store at +4°C
  • CAS No:
    14892-97-8
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Background References
  1. Increasing the efficiency of precise genome editing with CRISPR-Cas9 by inhibition of nonhomologous end joining.
    Maruyama et al.
    Nat.Biotechnol., 2015;33:538
  2. Increasing the efficiency of homology-directed repair for CRISPR-Cas9-induced precise gene editing in mammalian cells.
    Chu et al.
    Nat.Biotechnol., 2015;33:543
  3. Synthesis and structure determination of SCR7, a DNA ligase inhibitor
    Greco et al.
    Teterahedron Lett., 2016;57:3204
  4. SCR7 is neither a selective nor a potent inhibitor of human DNA ligase IV.
    Greco et al.
    DNA Repair (Amst), 2016;43:18

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