# Optical absorption spectrum of Riboflavin in ethanol # # Data from PhotochemCAD 2.1a has been munged on 2 June 2017 by Scott Prahl to make # the information available to non-Windows users. Although I have tried to be as careful # as possible, I may have introduced some error; the cautious user is advised to compare # these results with the original sources at www.photochemcad.com: # # H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design # and research tool in photochemistry," Photochem. Photobiol., 68, 141-142, 1998. # J. M. Dixon, M. Taniguchi and J. S. Lindsey "PhotochemCAD 2. A refined program with accompanying # spectral databases for photochemical calculations", Photochem. Photobiol., 81, 212-213, 2005. # # The spectral absorption measurements were made by R.-C. A. Fuh on 06-24-1997 using a Cary 3. # The absorption values were collected using a spectral bandwidth of 1.0 nm, a signal averaging time of 0.133 sec, a data interval of 0.25 nm, and a scan rate of 112.5 nm/min. # # These measurements were scaled to make the molar extinction coefficient match # the value of 33000 cm-1/M at 266.5 nm. These values were # then interpolated to report extinction coefficients at regular 1nm intervals # # The reported molar extinction coefficient is from # Koziol, J. (1966) Studies on flavins in organic solvents I. Spectral characteristics of riboflavin, riboflavin tetrabutyrate and lumichrome. Photochem. Photobiol. 5, 41-54. # ##Wavelength (nm) Molar Extinction (cm-1/M) 219 40222 220 40950 221 40798 222 39618 223 37861 224 35906 225 34017 226 32209 227 30499 228 28986 229 27684 230 26625 231 25779 232 25089 233 24543 234 24137 235 23881 236 23780 237 23811 238 23974 239 24253 240 24612 241 25026 242 25479 243 25947 244 26426 245 26955 246 27499 247 28042 248 28546 249 29010 250 29423 251 29796 252 30125 253 30490 254 30903 255 31394 256 31964 257 32581 258 33202 259 33770 260 34243 261 34591 262 34810 263 34845 264 34638 265 34163 266 33437 267 32562 268 31628 269 30689 270 29744 271 28777 272 27720 273 26565 274 25359 275 24128 276 22911 277 21723 278 20594 279 19493 280 18410 281 17362 282 16347 283 15378 284 14424 285 13509 286 12662 287 11899 288 11204 289 10606 290 10089 291 9651 292 9284 293 9019 294 8815 295 8663 296 8563 297 8513 298 8495 299 8513 300 8568 301 8626 302 8706 303 8802 304 8916 305 9037 306 9167 307 9293 308 9432 309 9569 310 9719 311 9861 312 10007 313 10155 314 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