Search Results
( Figure 1 D). Positive ESI–MS ( m / z ): [M + H] + 127.2, [M + Na] + 149.2. 1 H-NMR (CDCl 3 , 400 MHz): δ 9.59 (1H, s, CHO), 7.24 (1H, d, J = 4.0 Hz, H-3), 6.53 (1H, d, J = 4.0 Hz, H-4), 4.73 (2H, s, H-6) ( Figure 5 A). 13 C-NMR (CDCl 3 , 125 MHz
.3 MRT (0– t ) h 4.4 ± 0.2 2.4 ± 0.7 MRT (0-∞) h 6.6 ± 1.8 3.7 ± 1
used in Ozenoxacin Cream 1% w/w, as an anti-microbial preservative. Benzoic Acid appears as a white crystalline solid, has a molecular formula of C 7 H 6 O 2 , has a molecular weight of 122.12 g mol −1 and structure [ 12 ] is as shown in Fig. 1 (b
.67 4.12 8 h 6,052.3 1.41 0
.648 * T max h 6 8 CLz
(Ⅰ): 3′,4′,5,6,7,8-Hexamethoxyflavone (HM), C 21 H 22 O 8 , yellowish-white powder; EI-MS, m/z 403.05 [M+H] + . 1 HNMR(500 MHz, CDCl 3 ): δ (ppm): 7.40 (1H, d, J =2.1 Hz, H-2′), 6.98 (1H,d, J =8.5 Hz, H-5′), 7.56 (1H, dd, J = 2.1, 8.5 Hz, H-6
.5 210.0177 210.0219 −4.2 C 9 H 8 NO 3 S+ 6.5 152.0144 152.0165 −2.1 C 7 H 6
. Neutral (H 2 O) 80 °C for 1 h 6.76% 0.20 4. Thermal 80 °C for 1 h 4.49% 0.72 5. Oxide (3% H 2 O 2 ) 80 °C for 24 h 13.09% 0.24, 0.38 6. Photolytic Degradation 24 h 2.90% 0.31 Table 6. Comparison of presented RP-HPTLC method with previous reported methods
.84 48.18 39.07 36.12 H 6.08 7
