# 21. 2D binary fingerprints

## Definition

## Relevant descriptors

2D binary fingerprint descriptors have the value one(1) if there is a relevant bond at a topological distance, zero(0) if there is not. Here, the fingerprints are binary vectors that indicate "1" if each bit has a specific substructural fragment in the molecule, and "0" if not.

No. | Descriptor |

1 | existence of C - C at topological distance 1 |

2 | existence of C - N at topological distance 1 |

3 | existence of C - O at topological distance 1 |

4 | existence of C - S at topological distance 1 |

5 | existence of N - N at topological distance 1 |

6 | existence of N - O at topological distance 1 |

7 | existence of N - S at topological distance 1 |

8 | existence of O - O at topological distance 1 |

9 | existence of O - S at topological distance 1 |

10 | existence of S - S at topological distance 1 |

11 | existence of C - C at topological distance 2 |

12 | existence of C - N at topological distance 2 |

13 | existence of C - O at topological distance 2 |

14 | existence of C - S at topological distance 2 |

15 | existence of N - N at topological distance 2 |

16 | existence of N - O at topological distance 2 |

17 | existence of N - S at topological distance 2 |

18 | existence of O - O at topological distance 2 |

19 | existence of O - S at topological distance 2 |

20 | existence of S - S at topological distance 2 |

21 | existence of C - C at topological distance 3 |

22 | existence of C - N at topological distance 3 |

23 | existence of C - O at topological distance 3 |

24 | existence of C - S at topological distance 3 |

25 | existence of N - N at topological distance 3 |

26 | existence of N - O at topological distance 3 |

27 | existence of N - S at topological distance 3 |

28 | existence of O - O at topological distance 3 |

29 | existence of O - S at topological distance 3 |

30 | existence of S - S at topological distance 3 |

31 | existence of C - C at topological distance 4 |

32 | existence of C - N at topological distance 4 |

33 | existence of C - O at topological distance 4 |

34 | existence of C - S at topological distance 4 |

35 | existence of N - N at topological distance 4 |

36 | existence of N - O at topological distance 4 |

37 | existence of N - S at topological distance 4 |

38 | existence of O - O at topological distance 4 |

39 | existence of O - S at topological distance 4 |

40 | existence of S - S at topological distance 4 |

41 | existence of C - C at topological distance 5 |

42 | existence of C - N at topological distance 5 |

43 | existence of C - O at topological distance 5 |

44 | existence of C - S at topological distance 5 |

45 | existence of N - N at topological distance 5 |

46 | existence of N - O at topological distance 5 |

47 | existence of N - S at topological distance 5 |

48 | existence of O - O at topological distance 5 |

49 | existence of O - S at topological distance 5 |

50 | existence of S - S at topological distance 5 |

51 | existence of C - C at topological distance 6 |

52 | existence of C - N at topological distance 6 |

53 | existence of C - O at topological distance 6 |

54 | existence of C - S at topological distance 6 |

55 | existence of N - N at topological distance 6 |

56 | existence of N - O at topological distance 6 |

57 | existence of N - S at topological distance 6 |

58 | existence of O - O at topological distance 6 |

59 | existence of O - S at topological distance 6 |

60 | existence of S - S at topological distance 6 |

61 | existence of C - C at topological distance 7 |

62 | existence of C - N at topological distance 7 |

63 | existence of C - O at topological distance 7 |

64 | existence of C - S at topological distance 7 |

65 | existence of N - N at topological distance 7 |

66 | existence of N - O at topological distance 7 |

67 | existence of N - S at topological distance 7 |

68 | existence of O - O at topological distance 7 |

69 | existence of O - S at topological distance 7 |

70 | existence of S - S at topological distance 7 |

71 | existence of C - C at topological distance 8 |

72 | existence of C - N at topological distance 8 |

73 | existence of C - O at topological distance 8 |

74 | existence of C - S at topological distance 8 |

75 | existence of N - N at topological distance 8 |

76 | existence of N - O at topological distance 8 |

77 | existence of N - S at topological distance 8 |

78 | existence of O - O at topological distance 8 |

79 | existence of O - S at topological distance 8 |

80 | existence of S - S at topological distance 8 |

81 | existence of C - C at topological distance 9 |

82 | existence of C - N at topological distance 9 |

83 | existence of C - O at topological distance 9 |

84 | existence of C - S at topological distance 9 |

85 | existence of N - N at topological distance 9 |

86 | existence of N - O at topological distance 9 |

87 | existence of N - S at topological distance 9 |

88 | existence of O - O at topological distance 9 |

89 | existence of O - S at topological distance 9 |

90 | existence of S - S at topological distance 9 |

91 | existence of C - C at topological distance 10 |

92 | existence of C - N at topological distance 10 |

93 | existence of C - O at topological distance 10 |

94 | existence of C - S at topological distance 10 |

95 | existence of N - N at topological distance 10 |

96 | existence of N - O at topological distance 10 |

97 | existence of N - S at topological distance 10 |

98 | existence of O - O at topological distance 10 |

99 | existence of O - S at topological distance 10 |

100 | existence of S - S at topological distance 10 |