Wm. Craig Byrdwell, phd

Resources for Lipid Analysis in the 21st Century

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

Calculated monoisotopic masses of Sphingomyelin and Dihydrosphingomyelin and their adducts and fragments are based on the following atomic isotope masses:

 

1H = 1.0078250321

12C = 12.000000

14N = 14.0030740052

16O = 15.9949146221

23Na = 22.98976967

31P = 30.97376151

 

These masses are the most recent suggested isotopic masses from the National Institute of Standards and Technology (NIST) at:

 

Physics.NIST.gov/

PhysRefData/Compositions/

Text Box: A conveniently printable .pdf version of this Master List (11 pages), sorted by Long-Chain Base, is available HERE
A conveniently printable .pdf version of this Master List (11 pages), sorted by Fatty Amide Chain, is available HERE
The BEST printable .pdf version of this Master List (9 pages), sorted by [M+H]+, mass is available HERE

Although the most common Sphingomyelin (SM) and Dihydrosphingomyelin (DSM) molecular species in most tissue types have a d18:1 or a d18:0 Long-Chain Base (LCB), respectively,  some  samples types contain a greater diversity of Long-Chain Bases.  The most common SM and DSM molecular species having several different Long-Chain Bases combined with numerous different Fatty Amide (FA) chains are given on this page and in the Master List .pdf files linked above. 

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

Copyright © 2005-2011

Byrdwell.com

 

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell.  If you use these tables please reference

www.Sphingomyelin.com

*NOTE:  APCI-MS gives fragments at [M+45-2H] in negative-ion mode, not [M+45], meaning that two hydrogens are lost from the formate adduct.  This is perhaps due to formation of a cyclic structure in the adduct.

20:0

6:0

593.47

615.45

631.42

637.46

577.43

410.40

392.39

140.11

116.11

20:0

6:1

591.45

613.43

629.41

635.44

575.42

408.38

390.37

138.09

114.09

20:0

8:0

621.50

643.48

659.45

665.49

605.47

438.43

420.42

168.14

144.14

20:0

8:1

619.48

641.46

657.44

663.47

603.45

436.42

418.40

166.12

142.12

20:0

10:0

649.53

671.51

687.48

693.52

633.50

466.46

448.45

196.17

172.17

20:0

10:1

647.51

669.49

685.47

691.50

631.48

464.45

446.44

194.15

170.15

20:0

12:0

677.56

699.54

715.52

721.55

661.53

494.49

476.48

224.20

200.20

20:0

12:1

675.54

697.53

713.50

719.53

659.51

492.48

474.47

222.19

198.19

20:0

12:2

673.53

695.51

711.48

717.52

657.50

490.46

472.45

220.17

196.17

20:0

13:0

691.58

713.56

729.53

735.57

675.54

508.51

490.50

238.22

214.22

20:0

13:1

689.56

711.54

727.52

733.55

673.53

506.49

488.48

236.20

212.20

20:0

13:2

687.54

709.53

725.50

731.53

671.51

504.48

486.47

234.19

210.19

20:0

14:0

705.59

727.57

743.55

749.58

689.56

522.53

504.51

252.23

228.23

20:0

14:1

703.58

725.56

741.53

747.57

687.54

520.51

502.50

250.22

226.22

20:0

14:2

701.56

723.54

739.52

745.55

685.53

518.49

500.48

248.20

224.20

20:0

15:0

719.61

741.59

757.56

763.60

703.58

536.54

518.53

266.25

242.25

20:0

15:1

717.59

739.57

755.55

761.58

701.56

534.53

516.51

264.23

240.23

20:0

15:2

715.58

737.56

753.53

759.57

699.54

532.51

514.50

262.22

238.22

20:0

16:0

733.62

755.60

771.58

777.61

717.59

550.56

532.55

280.26

256.26

20:0

16:1

731.61

753.59

769.56

775.60

715.58

548.54

530.53

278.25

254.25

20:0

16:2

729.59

751.57

767.55

773.58

713.56

546.53

528.51

276.23

252.23

20:0

17:0

747.64

769.62

785.59

791.63

731.61

564.57

546.56

294.28

270.28

20:0

17:1

745.62

767.60

783.58

789.61

729.59

562.56

544.55

292.26

268.26

20:0

17:2

743.61

765.59

781.56

787.60

727.58

560.54

542.53

290.25

266.25

20:0

18:0

761.65

783.64

799.61

805.64

745.62

578.59

560.58

308.30

284.30

20:0

18:1

759.64

781.62

797.59

803.63

743.61

576.57

558.56

306.28

282.28

20:0

18:2

757.62

779.60

795.58

801.61

741.59

574.56

556.55

304.26

280.26

20:0

18:3

755.61

777.59

793.56

799.60

739.58

572.54

554.53

302.25

278.25

20:0

19:0

775.67

797.65

813.63

819.66

759.64

592.60

574.59

322.31

298.31

20:0

19:1

773.65

795.64

811.61

817.64

757.62

590.59

572.58

320.30

296.30

20:0

19:2

771.64

793.62

809.59

815.63

755.61

588.57

570.56

318.28

294.28

20:0

20:0

789.68

811.67

827.64

833.67

773.65

606.62

588.61

336.33

312.33

20:0

20:1

787.67

809.65

825.63

831.66

771.64

604.60

586.59

334.31

310.31

20:0

20:2

785.65

807.64

823.61

829.64

769.62

602.59

584.58

332.30

308.30

20:0

21:0

803.70

825.68

841.66

847.69

787.67

620.63

602.62

350.34

326.34

20:0

21:1

801.68

823.67

839.64

845.67

785.65

618.62

600.61

348.33

324.33

20:0

21:2

799.67

821.65

837.63

843.66

783.64

616.60

598.59

346.31

322.31

20:0

22:0

817.72

839.70

855.67

861.71

801.68

634.65

616.64

364.36

340.36

20:0

22:1

815.70

837.68

853.66

859.69

799.67

632.63

614.62

362.34

338.34

20:0

22:2

813.68

835.67

851.64

857.67

797.65

630.62

612.61

360.33

336.33

20:0

23:0

831.73

853.71

869.69

875.72

815.70

648.67

630.66

378.37

354.37

20:0

23:1

829.72

851.70

867.67

873.71

813.68

646.65

628.64

376.36

352.36

20:0

23:2

827.70

849.68

865.66

871.69

811.67

644.63

626.62

374.34

350.34

20:0

24:0

845.75

867.73

883.70

889.74

829.72

662.68

644.67

392.39

368.39

20:0

24:1

843.73

865.71

881.69

887.72

827.70

660.67

642.66

390.37

366.37

20:0

24:2

841.72

863.70

879.67

885.71

825.68

658.65

640.64

388.36

364.36

20:0

25:0

859.76

881.75

897.72

903.75

843.73

676.70

658.69

406.40

382.40

20:0

25:1

857.75

879.73

895.70

901.74

841.72

674.68

656.67

404.39

380.39

20:0

25:2

855.73

877.71

893.69

899.72

839.70

672.67

654.66

402.37

378.37

20:0

26:0

873.78

895.76

911.73

917.77

857.75

690.71

672.70

420.42

396.42

20:0

26:1

871.76

893.75

909.72

915.75

855.73

688.70

670.69

418.40

394.40

20:0

26:2

869.75

891.73

907.70

913.74

853.72

686.68

668.67

416.39

392.39

20:1

6:0

591.45

613.43

629.41

635.44

575.42

408.38

390.37

140.11

116.11

20:1

6:1

589.43

611.42

627.39

633.42

573.40

406.37

388.36

138.09

114.09

20:1

8:0

619.48

641.46

657.44

663.47

603.45

436.42

418.40

168.14

144.14

20:1

8:1

617.47

639.45

655.42

661.46

601.43

434.40

416.39

166.12

142.12

20:1

10:0

647.51

669.49

685.47

691.50

631.48

464.45

446.44

196.17

172.17

20:1

10:1

645.50

667.48

683.45

689.49

629.47

462.43

444.42

194.15

170.15

20:1

12:0

675.54

697.53

713.50

719.53

659.51

492.48

474.47

224.20

200.20

20:1

12:1

673.53

695.51

711.48

717.52

657.50

490.46

472.45

222.19

198.19

20:1

12:2

671.51

693.49

709.47

715.50

655.48

488.45

470.44

220.17

196.17

20:1

13:0

689.56

711.54

727.52

733.55

673.53

506.49

488.48

238.22

214.22

20:1

13:1

687.54

709.53

725.50

731.53

671.51

504.48

486.47

236.20

212.20

20:1

13:2

685.53

707.51

723.48

729.52

669.50

502.46

484.45

234.19

210.19

20:1

14:0

703.58

725.56

741.53

747.57

687.54

520.51

502.50

252.23

228.23

20:1

14:1

701.56

723.54

739.52

745.55

685.53

518.49

500.48

250.22

226.22

20:1

14:2

699.54

721.53

737.50

743.53

683.51

516.48

498.47

248.20

224.20

20:1

15:0

717.59

739.57

755.55

761.58

701.56

534.53

516.51

266.25

242.25

20:1

15:1

715.58

737.56

753.53

759.57

699.54

532.51

514.50

264.23

240.23

20:1

15:2

713.56

735.54

751.52

757.55

697.53

530.49

512.48

262.22

238.22

20:1

16:0

731.61

753.59

769.56

775.60

715.58

548.54

530.53

280.26

256.26

20:1

16:1

729.59

751.57

767.55

773.58

713.56

546.53

528.51

278.25

254.25

20:1

16:2

727.58

749.56

765.53

771.57

711.54

544.51

526.50

276.23

252.23

20:1

17:0

745.62

767.60

783.58

789.61

729.59

562.56

544.55

294.28

270.28

20:1

17:1

743.61

765.59

781.56

787.60

727.58

560.54

542.53

292.26

268.26

20:1

17:2

741.59

763.57

779.55

785.58

725.56

558.53

540.51

290.25

266.25

20:1

18:0

759.64

781.62

797.59

803.63

743.61

576.57

558.56

308.30

284.30

20:1

18:1

757.62

779.60

795.58

801.61

741.59

574.56

556.55

306.28

282.28

20:1

18:2

755.61

777.59

793.56

799.60

739.58

572.54

554.53

304.26

280.26

20:1

18:3

753.59

775.57

791.55

797.58

737.56

570.53

552.51

302.25

278.25

20:1

19:0

773.65

795.64

811.61

817.64

757.62

590.59

572.58

322.31

298.31

20:1

19:1

771.64

793.62

809.59

815.63

755.61

588.57

570.56

320.30

296.30

20:1

19:2

769.62

791.60

807.58

813.61

753.59

586.56

568.55

318.28

294.28

20:1

20:0

787.67

809.65

825.63

831.66

771.64

604.60

586.59

336.33

312.33

20:1

20:1

785.65

807.64

823.61

829.64

769.62

602.59

584.58

334.31

310.31

20:1

20:2

783.64

805.62

821.59

827.63

767.61

600.57

582.56

332.30

308.30

20:1

21:0

801.68

823.67

839.64

845.67

785.65

618.62

600.61

350.34

326.34

20:1

21:1

799.67

821.65

837.63

843.66

783.64

616.60

598.59

348.33

324.33

20:1

21:2

797.65

819.64

835.61

841.64

781.62

614.59

596.58

346.31

322.31

20:1

22:0

815.70

837.68

853.66

859.69

799.67

632.63

614.62

364.36

340.36

20:1

22:1

813.68

835.67

851.64

857.67

797.65

630.62

612.61

362.34

338.34

20:1

22:2

811.67

833.65

849.63

855.66

795.64

628.60

610.59

360.33

336.33

20:1

23:0

829.72

851.70

867.67

873.71

813.68

646.65

628.64

378.37

354.37

20:1

23:1

827.70

849.68

865.66

871.69

811.67

644.63

626.62

376.36

352.36

20:1

23:2

825.68

847.67

863.64

869.67

809.65

642.62

624.61

374.34

350.34

20:1

24:0

843.73

865.71

881.69

887.72

827.70

660.67

642.66

392.39

368.39

20:1

24:1

841.72

863.70

879.67

885.71

825.68

658.65

640.64

390.37

366.37

20:1

24:2

839.70

861.68

877.66

883.69

823.67

656.63

638.62

388.36

364.36

20:1

25:0

857.75

879.73

895.70

901.74

841.72

674.68

656.67

406.40

382.40

20:1

25:1

855.73

877.71

893.69

899.72

839.70

672.67

654.66

404.39

380.39

20:1

25:2

853.72

875.70

891.67

897.71

837.68

670.65

652.64

402.37

378.37

20:1

26:0

871.76

893.75

909.72

915.75

855.73

688.70

670.69

420.42

396.42

20:1

26:1

869.75

891.73

907.70

913.74

853.72

686.68

668.67

418.40

394.40

20:1

26:2

867.73

889.71

905.69

911.72

851.70

684.67

666.66

416.39

392.39

Comprehensive Master List of Calculated Monoisotopic Masses for SM and DSM Species

 

 

 +ESI

 -ESI*

 -ESI/-APCI

 +APCI

LCB (CN:d.b.)

Fatty Amide (CN:d.b.)

[M+H]+

[M+Na]+

[M+K]+

[M +45]-

formate

[M-15]-

[Cer-H2O+H]+

[Cer-2H2O+H]+

[FA (L)]+

[FA (S)]+

16:0

6:0

537.40

559.39

575.36

581.39

521.37

354.34

336.33

140.11

116.11

16:0

6:1

535.39

557.37

573.34

579.38

519.36

352.32

334.31

138.09

114.09

16:0

8:0

565.43

587.42

603.39

609.42

549.40

382.37

364.36

168.14

144.14

16:0

8:1

563.42

585.40

601.37

607.41

547.39

380.35

362.34

166.12

142.12

16:0

10:0

593.47

615.45

631.42

637.46

577.43

410.40

392.39

196.17

172.17

16:0

10:1

591.45

613.43

629.41

635.44

575.42

408.38

390.37

194.15

170.15

16:0

12:0

621.50

643.48

659.45

665.49

605.47

438.43

420.42

224.20

200.20

16:0

12:1

619.48

641.46

657.44

663.47

603.45

436.42

418.40

222.19

198.19

16:0

12:2

617.47

639.45

655.42

661.46

601.43

434.40

416.39

220.17

196.17

16:0

13:0

635.51

657.49

673.47

679.50

619.48

452.45

434.44

238.22

214.22

16:0

13:1

633.50

655.48

671.45

677.49

617.47

450.43

432.42

236.20

212.20

16:0

13:2

631.48

653.46

669.44

675.47

615.45

448.42

430.40

234.19

210.19

16:0

14:0

649.53

671.51

687.48

693.52

633.50

466.46

448.45

252.23

228.23

16:0

14:1

647.51

669.49

685.47

691.50

631.48

464.45

446.44

250.22

226.22

16:0

14:2

645.50

667.48

683.45

689.49

629.47

462.43

444.42

248.20

224.20

16:0

15:0

663.54

685.53

701.50

707.53

647.51

480.48

462.47

266.25

242.25

16:0

15:1

661.53

683.51

699.48

705.52

645.50

478.46

460.45

264.23

240.23

16:0

15:2

659.51

681.49

697.47

703.50

643.48

476.45

458.44

262.22

238.22

16:0

16:0

677.56

699.54

715.52

721.55

661.53

494.49

476.48

280.26

256.26

16:0

16:1

675.54

697.53

713.50

719.53

659.51

492.48

474.47

278.25

254.25

16:0

16:2

673.53

695.51

711.48

717.52

657.50

490.46

472.45

276.23

252.23

16:0

17:0

691.58

713.56

729.53

735.57

675.54

508.51

490.50

294.28

270.28

16:0

17:1

689.56

711.54

727.52

733.55

673.53

506.49

488.48

292.26

268.26

16:0

17:2

687.54

709.53

725.50

731.53

671.51

504.48

486.47

290.25

266.25

16:0

18:0

705.59

727.57

743.55

749.58

689.56

522.53

504.51

308.30

284.30

16:0

18:1

703.58

725.56

741.53

747.57

687.54

520.51

502.50

306.28

282.28

16:0

18:2

701.56

723.54

739.52

745.55

685.53

518.49

500.48

304.26

280.26

16:0

18:3

699.54

721.53

737.50

743.53

683.51

516.48

498.47

302.25

278.25

16:0

19:0

719.61

741.59

757.56

763.60

703.58

536.54

518.53

322.31

298.31

16:0

19:1

717.59

739.57

755.55

761.58

701.56

534.53

516.51

320.30

296.30

16:0

19:2

715.58

737.56

753.53

759.57

699.54

532.51

514.50

318.28

294.28

16:0

20:0

733.62

755.60

771.58

777.61

717.59

550.56

532.55

336.33

312.33

16:0

20:1

731.61

753.59

769.56

775.60

715.58

548.54

530.53

334.31

310.31

16:0

20:2

729.59

751.57

767.55

773.58

713.56

546.53

528.51

332.30

308.30

16:0

21:0

747.64

769.62

785.59

791.63

731.61

564.57

546.56

350.34

326.34

16:0

21:1

745.62

767.60

783.58

789.61

729.59

562.56

544.55

348.33

324.33

16:0

21:2

743.61

765.59

781.56

787.60

727.58

560.54

542.53

346.31

322.31

16:0

22:0

761.65

783.64

799.61

805.64

745.62

578.59

560.58

364.36

340.36

16:0

22:1

759.64

781.62

797.59

803.63

743.61

576.57

558.56

362.34

338.34

16:0

22:2

757.62

779.60

795.58

801.61

741.59

574.56

556.55

360.33

336.33

16:0

23:0

775.67

797.65

813.63

819.66

759.64

592.60

574.59

378.37

354.37

16:0

23:1

773.65

795.64

811.61

817.64

757.62

590.59

572.58

376.36

352.36

16:0

23:2

771.64

793.62

809.59

815.63

755.61

588.57

570.56

374.34

350.34

16:0

24:0

789.68

811.67

827.64

833.67

773.65

606.62

588.61

392.39

368.39

16:0

24:1

787.67

809.65

825.63

831.66

771.64

604.60

586.59

390.37

366.37

16:0

24:2

785.65

807.64

823.61

829.64

769.62

602.59

584.58

388.36

364.36

16:0

25:0

803.70

825.68

841.66

847.69

787.67

620.63

602.62

406.40

382.40

16:0

25:1

801.68

823.67

839.64

845.67

785.65

618.62

600.61

404.39

380.39

16:0

25:2

799.67

821.65

837.63

843.66

783.64

616.60

598.59

402.37

378.37

16:0

26:0

817.72

839.70

855.67

861.71

801.68

634.65

616.64

420.42

396.42

16:0

26:1

815.70

837.68

853.66

859.69

799.67

632.63

614.62

418.40

394.40

16:0

26:2

813.68

835.67

851.64

857.67

797.65

630.62

612.61

416.39

392.39

16:1

6:0

535.39

557.37

573.34

579.38

519.36

352.32

334.31

140.11

116.11

16:1

6:1

533.37

555.35

571.33

577.36

517.34

350.31

332.30

138.09

114.09

16:1

8:0

563.42

585.40

601.37

607.41

547.39

380.35

362.34

168.14

144.14

16:1

8:1

561.40

583.39

599.36

605.39

545.37

378.34

360.33

166.12

142.12

16:1

10:0

591.45

613.43

629.41

635.44

575.42

408.38

390.37

196.17

172.17

16:1

10:1

589.43

611.42

627.39

633.42

573.40

406.37

388.36

194.15

170.15

16:1

12:0

619.48

641.46

657.44

663.47

603.45

436.42

418.40

224.20

200.20

16:1

12:1

617.47

639.45

655.42

661.46

601.43

434.40

416.39

222.19

198.19

16:1

12:2

615.45

637.43

653.41

659.44

599.42

432.38

414.37

220.17

196.17

16:1

13:0

633.50

655.48

671.45

677.49

617.47

450.43

432.42

238.22

214.22

16:1

13:1

631.48

653.46

669.44

675.47

615.45

448.42

430.40

236.20

212.20

16:1

13:2

629.47

651.45

667.42

673.46

613.43

446.40

428.39

234.19

210.19

16:1

14:0

647.51

669.49

685.47

691.50

631.48

464.45

446.44

252.23

228.23

16:1

14:1

645.50

667.48

683.45

689.49

629.47

462.43

444.42

250.22

226.22

16:1

14:2

643.48

665.46

681.44

687.47

627.45

460.42

442.40

248.20

224.20

16:1

15:0

661.53

683.51

699.48

705.52

645.50

478.46

460.45

266.25

242.25

16:1

15:1

659.51

681.49

697.47

703.50

643.48

476.45

458.44

264.23

240.23

16:1

15:2

657.50

679.48

695.45

701.49

641.47

474.43

456.42

262.22

238.22

16:1

16:0

675.54

697.53

713.50

719.53

659.51

492.48

474.47

280.26

256.26

16:1

16:1

673.53

695.51

711.48

717.52

657.50

490.46

472.45

278.25

254.25

16:1

16:2

671.51

693.49

709.47

715.50

655.48

488.45

470.44

276.23

252.23

16:1

17:0

689.56

711.54

727.52

733.55

673.53

506.49

488.48

294.28

270.28

16:1

17:1

687.54

709.53

725.50

731.53

671.51

504.48

486.47

292.26

268.26

16:1

17:2

685.53

707.51

723.48

729.52

669.50

502.46

484.45

290.25

266.25

16:1

18:0

703.58

725.56

741.53

747.57

687.54

520.51

502.50

308.30

284.30

16:1

18:1

701.56

723.54

739.52

745.55

685.53

518.49

500.48

306.28

282.28

16:1

18:2

699.54

721.53

737.50

743.53

683.51

516.48

498.47

304.26

280.26

16:1

18:3

697.53

719.51

735.48

741.52

681.50

514.46

496.45

302.25

278.25

16:1

19:0

717.59

739.57

755.55

761.58

701.56

534.53

516.51

322.31

298.31

16:1

19:1

715.58

737.56

753.53

759.57

699.54

532.51

514.50

320.30

296.30

16:1

19:2

713.56

735.54

751.52

757.55

697.53

530.49

512.48

318.28

294.28

16:1

20:0

731.61

753.59

769.56

775.60

715.58

548.54

530.53

336.33

312.33

16:1

20:1

729.59

751.57

767.55

773.58

713.56

546.53

528.51

334.31

310.31

16:1

20:2

727.58

749.56

765.53

771.57

711.54

544.51

526.50

332.30

308.30

16:1

21:0

745.62

767.60

783.58

789.61

729.59

562.56

544.55

350.34

326.34

16:1

21:1

743.61

765.59

781.56

787.60

727.58

560.54

542.53

348.33

324.33

16:1

21:2

741.59

763.57

779.55

785.58

725.56

558.53

540.51

346.31

322.31

16:1

22:0

759.64

781.62

797.59

803.63

743.61

576.57

558.56

364.36

340.36

16:1

22:1

757.62

779.60

795.58

801.61

741.59

574.56

556.55

362.34

338.34

16:1

22:2

755.61

777.59

793.56

799.60

739.58

572.54

554.53

360.33

336.33

16:1

23:0

773.65

795.64

811.61

817.64

757.62

590.59

572.58

378.37

354.37

16:1

23:1

771.64

793.62

809.59

815.63

755.61

588.57

570.56

376.36

352.36

16:1

23:2

769.62

791.60

807.58

813.61

753.59

586.56

568.55

374.34

350.34

16:1

24:0

787.67