structure

Calculated M.W

Calculated

M.W +Na

Experimental

peak

Peak relative

proportion (%)

G 1H

monomer

181

204

204

15

G-2H

monomer

195

218

218

20

S-5H

monomer

205

228

228

5

S + 4H

monomer

214

237

237

18

S + 6H

monomer

224

247

247

5

H-G-OH

dimer

228

251

251

15

H-G-7H

dimer

238

261

261

8

H-G

dimer

245

268

268

28

H-G + 1H

dimer

246

269

269

5

H-G + 5H

dimer

250

273

273

37

S-S-CH3

dimer

251

274

274

15

G-H-2OH

dimer

257

280

280

65

S-S-7H

dimer

259

282

282

97

G-H + 6H

dimer

260

283

283

10

S-S + 2H

dimer

268

291

291

5

S-S + 3H

dimer

279

302

302

21

G-G + 4H

dimer

280

303

303

15

G-H

dimer

290

313

313

10

G-H + 7H

dimer

297

320

320

5

H-S

G-G

dimer

304

327

327

10

H-S

G-G + 2H

dimer

306

329

329

5

H-S

G-G-CO2

dimer

316

339

339

9

S-H-CH2

dimer

323

346

346

5

G-G + 2OH

dimer

330

353

353

5

H-G + 3H

dimer

339

362

362

100

H-G-2H

dimer

340

363

363

3

G-H-H2O

S-H

dimer

342

365

365

3

H-S

G-H-CH3

dimer

345

368

368

12

S-H

dimer

349

372

372

5

H-G-1H

dimer

356

379

379

4

G-G

S-H + 3H

dimer

363

386

386

5

G-G-2H

dimer

371

394

394

4

G-G-2H

dimer

380

403

403

12

G-G-H2O

dimer

384

407

407

68