@misc{indiciaee63e4435b6e1,
  title = {A naturally occurring indolylpteridine.},
  author = {W S McNutt and I Takeda},
  year = {1969},
  doi = {10.1021/bi00832a010},
  url = {https://pubmed.ncbi.nlm.nih.gov/4308720/},
  note = {Source identifier: 4308720}
}