Table 1

1D and 2D NMR spectral data for 3-carboxy-1-methyl pyridinium obtained in CD₃OD (δ in ppm).

No.

δ_C

δ_H (#H, m, J/Hz)

¹H-¹H COSY

HMBC (δ_C to δ_H)

2

147.0

CH

9.33 (1H, s)

H-6, H-8

H-4, H-6, H-8

3

162.0

qC

4

147.0

CH

8.95 (1H, s)

H-5

H-2, H-5, H6

5

127.7

CH

8.11 (1H, bt)

H-4, H-6

H-4, H-6

6

145.2

CH

8.96 (1H, s)

H-2, H-5, H-8

H-2, H-4, H-8

7

166.0

qC

8

47.6

CH₃

4.43 (3H, s)

H-2, H-6

H-6

Temraz et al. BMC Pharmacology 2006 6:10   doi:10.1186/1471-2210-6-10