JChem Base License Key

    The maximum number of substructure and similarity searches per minute allowed by JChem Base is calculated from the license key entered using JChemManager. If no license key has been specified, then the program is in demo mode that allows one search per minute. Without a license key sent by Chemaxon or one of its distributors, the program can only be used for evaluation.

    Before applying for a license key, the maximum number of substructure and similarity searches per minute should be predicted.

    The following table helps you to determine the optimal access level. Using the Poisson distribution, the maximum number of searches can be calculated from the average number of searches at a given probability level.

    #### Example for using the table: Assume that you would like to be 99% sure that the maximum number of searches will not be exceeded in a one minute period. If you expect that the average number of searches will be 10 per minute at peak time, then choose 17 for the access level.

    Please send your selection to Chemaxon when you request price information or a new license key allowing more searches.

    Average Max. (p=90%) Max. (p=99%) Max. (p=99.9%)
    1 1 3 4
    2 3 5 7
    3 4 7 9
    4 6 8 10
    5 7 10 12
    6 8 11 14
    7 9 13 15
    8 11 14 17
    9 12 16 19
    10 13 17 20
    11 14 18 22
    12 16 20 23
    13 17 21 24
    14 18 22 26
    15 19 24 27
    16 20 25 29
    17 21 26 30
    18 23 28 31
    19 24 29 33
    20 25 30 34
    21 26 31 35
    22 27 33 37
    23 28 34 38
    24 29 35 39
    25 31 36 41
    26 32 38 42
    27 33 39 43
    28 34 40 45
    29 35 41 46
    30 36 42 47
    31 37 44 49
    32 38 45 50
    33 39 46 51
    34 41 47 52
    35 42 48 54
    36 43 50 55
    37 44 51 56
    38 45 52 57
    39 46 53 59
    40 47 54 60
    41 48 56 61
    42 49 57 62
    43 51 58 64
    44 52 59 65
    45 53 60 66
    46 54 61 67
    47 55 63 69
    48 56 64 70
    49 57 65 71
    50 58 66 72
    51 59 67 73
    52 60 68 75
    53 61 70 76
    54 63 71 77
    55 64 72 78
    56 65 73 79
    57 66 74 81
    58 67 75 82
    59 68 77 83
    60 69 78 84
    61 70 79 86
    62 71 80 87
    63 72 81 88
    64 73 82 89
    65 74 83 90
    66 76 85 91
    67 77 86 93
    68 78 87 94
    69 79 88 95
    70 80 89 96
    71 81 90 97
    72 82 91 99
    73 83 93 100
    74 84 94 101
    75 85 95 102
    76 86 96 103
    77 87 97 104
    78 88 98 106
    79 89 99 107
    80 91 101 108
    81 92 102 109
    82 93 103 110
    83 94 104 112
    84 95 105 113
    85 96 106 114
    86 97 107 115
    87 98 108 116
    88 99 110 117
    89 100 111 119
    90 101 112 120
    91 102 113 121
    92 103 114 122
    93 104 115 123
    94 106 116 124
    95 107 117 125
    96 108 119 127
    97 109 120 128
    98 110 121 129
    99 111 122 130
    100 112 123 131
    101 113 124 132
    102 114 125 134
    103 115 126 135
    104 116 127 136
    105 117 129 137
    106 118 130 138
    107 119 131 139
    108 120 132 140
    109 121 133 142
    110 123 134 143
    111 124 135 144
    112 125 136 145
    113 126 137 146
    114 127 139 147
    115 128 140 149
    116 129 141 150
    117 130 142 151
    118 131 143 152
    119 132 144 153
    120 133 145 154
    121 134 146 155
    122 135 147 157
    123 136 149 158
    124 137 150 159
    125 138 151 160
    126 139 152 161
    127 141 153 162
    128 142 154 163
    129 143 155 164
    130 144 156 166
    131 145 157 167
    132 146 158 168
    133 147 160 169
    134 148 161 170
    135 149 162 171
    136 150 163 172
    137 151 164 174
    138 152 165 175
    139 153 166 176
    140 154 167 177
    141 155 168 178
    142 156 169 179
    143 157 171 180
    144 158 172 181
    145 160 173 183
    146 161 174 184
    147 162 175 185
    148 163 176 186
    149 164 177 187
    150 165 178 188
    151 166 179 189
    152 167 180 190
    153 168 181 192
    154 169 183 193
    155 170 184 194
    156 171 185 195
    157 172 186 196
    158 173 187 197
    159 174 188 198
    160 175 189 199
    161 176 190 201
    162 177 191 202
    163 178 192 203
    164 180 194 204
    165 181 195 205
    166 182 196 206
    167 183 197 207
    168 184 198 208
    169 185 199 210
    170 186 200 211
    171 187 201 212
    172 188 202 213
    173 189 203 214
    174 190 204 215
    175 191 205 216
    176 192 207 217
    177 193 208 219
    178 194 209 220
    179 195 210 221
    180 196 211 222
    181 197 212 223
    182 198 213 224
    183 199 214 225
    184 200 215 226
    185 202 216 227
    186 203 217 229
    187 204 219 230
    188 205 220 231
    189 206 221 232
    190 207 222 233
    191 208 223 234
    192 209 224 235
    193 210 225 236
    194 211 226 237
    195 212 227 239
    196 213 228 240
    197 214 229 241
    198 215 230 242
    199 216 232 243
    200 217 233 244