Botanical Information Senna obtusifolia (L.) H.S.Irwin & Barneby (under development)
| Synonyms | Cassia obtusifolia L. |
| Cassia rogeonii Ghesq. Rev. | |
| Cassia tora var. humilis Pers. | |
| Cassia tora var. obtusifolia (L.) Haines | |
| Cassia toroides Raf. | |
| Emelista obtusifolia (L.) Raf. | |
| Senna toroides Roxb. | |
| Common name (en) | Chinese senna |
| Common name (fr) | Pistache marron |
| Common name (hi) | चकवड़ |
| Common name (ja) | エビスグサ |
| Common name (pt) | Mata-pasto |
| Common name (vi) | Thảo quyết minh |
| Common name (zh) | 決明 |
| Sample preparation | Weigh 0.5 g of the powdered sample and place it in a 50-mL conical flask, then add 10 mL of ethanol (70%). Sonicate (90 W) the mixture for 20 min. Filter through a filter paper |
| Mobile phase | n-hexane, isopropanol, formic acid 5:1:0.1 (v/v/v) |
| Derivatization | Spray with 3% of sodium hydroxide in ethanol and heat at 105°C for 2 min |
| Sample preparation | Add 1.0 g of powdered drug to 10 mL of methanol, immerse for 30 min, filter and evaporate the filtrate to dryness, dissolve the residue in 10 mL of water, add 1 mL of hydrochloric acid, place in a water bath for 30 min, cool immediately , extract twice each with 20 mL of ethyl ether, combine the ethyl ether extracts, evaporate to dryness, dissolve the residue in 1 mL chloroform |
| Mobile phase | Petroleum ether (30-60°C), ethyl formate, formic acid 15:5:1 (v/v/v) |
| Derivatization | Exposure with ammonia vapor |