24,25-Dihydroxydammar-20-en-3-oneCAS# 63543-53-3 |
Quality Control & MSDS
Number of papers citing our products
Chemical structure
3D structure
Cas No. | 63543-53-3 | SDF | Download SDF |
PubChem ID | 101087017 | Appearance | Powder |
Formula | C30H50O3 | M.Wt | 458.7 |
Type of Compound | Triterpenoids | Storage | Desiccate at -20°C |
Solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. | ||
Chemical Name | (5R,8R,9R,10R,13R,14R,17S)-17-[(5R)-5,6-dihydroxy-6-methylhept-1-en-2-yl]-4,4,8,10,14-pentamethyl-1,2,5,6,7,9,11,12,13,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one | ||
SMILES | CC1(C2CCC3(C(C2(CCC1=O)C)CCC4C3(CCC4C(=C)CCC(C(C)(C)O)O)C)C)C | ||
Standard InChIKey | RHHDOPOBWMUHDL-QLOVMQEJSA-N | ||
Standard InChI | InChI=1S/C30H50O3/c1-19(9-12-25(32)27(4,5)33)20-13-17-29(7)21(20)10-11-23-28(6)16-15-24(31)26(2,3)22(28)14-18-30(23,29)8/h20-23,25,32-33H,1,9-18H2,2-8H3/t20-,21-,22+,23-,25-,28+,29-,30-/m1/s1 | ||
General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. |
24,25-Dihydroxydammar-20-en-3-one Dilution Calculator
24,25-Dihydroxydammar-20-en-3-one Molarity Calculator
1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
1 mM | 2.1801 mL | 10.9004 mL | 21.8007 mL | 43.6015 mL | 54.5019 mL |
5 mM | 0.436 mL | 2.1801 mL | 4.3601 mL | 8.7203 mL | 10.9004 mL |
10 mM | 0.218 mL | 1.09 mL | 2.1801 mL | 4.3601 mL | 5.4502 mL |
50 mM | 0.0436 mL | 0.218 mL | 0.436 mL | 0.872 mL | 1.09 mL |
100 mM | 0.0218 mL | 0.109 mL | 0.218 mL | 0.436 mL | 0.545 mL |
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. |
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Psychooncology. 2018 Feb;27(2):668-675.
OBJECTIVE: Studies indicate that social constraints (barriers to emotional expression) may be a risk factor for psychological morbidity. We aimed to investigate the association between prostate cancer-related social constraints and psychological well-being following prostate cancer surgery. METHODS: In a group of 3478 partnered patients, participating in the Laparoscopic Prostatectomy Robot Open trial, a prospective multicenter comparative study of robot-assisted laparoscopic and retropubic radical prostatectomy for prostate cancer, we used log-binomial regression analysis to investigate the links between prostate cancer-related social constraints at 3 months after surgery and psychological well-being at 12 and 24 months. RESULTS: A total of 1086 and 1093 men reported low well-being at 12 and 24 months, respectively. Prostate cancer-related social constraints by partner predicted low psychological well-being at 12 months (adjusted RR: 1.4; 95% CI, 1.1-1.9) and by others (adjusted RR: 1.9; 95% CI, 1.1-3.5). Intrusive thoughts mediated the association. CONCLUSIONS: Negative responses from the social environment, especially from partner to talking about the prostate cancer experience affected patients' psychological well-being 2 years after radical prostatectomy. Results emphasize the importance of helping patients mobilize psychosocial resources within their social network, especially among those with a lack of quality psychosocial support.
HBeAg levels at week 24 predict response to 8 years of tenofovir in HBeAg-positive chronic hepatitis B patients.[Pubmed:29023803]
Aliment Pharmacol Ther. 2018 Jan;47(1):114-122.
BACKGROUND: Hepatitis B e antigen (HBeAg) seroconversion is a treatment endpoint for HBeAg-positive CHB, and a necessary precursor to HBsAg loss. Biomarkers that predict serological outcomes would be useful. AIM: To evaluate the utility of measuring HBeAg levels for predicting HBeAg seroconversion and HBsAg loss under long-term tenofovir (TDF) therapy. METHODS: A total of 266 patients were enrolled into a phase III study of TDF vs adefovir (ADV) for 48 weeks in HBeAg-positive patients, followed by open-label TDF up to 384 weeks. Serum HBeAg levels were measured for subjects with samples available at both baseline and week 24 of treatment (n = 200). Analysis compared subjects who achieved HBeAg seroconversion by week 384 vs no HBeAg seroconversion. RESULTS: HBeAg seroconversion rate was 52% by week 384. Time to HBeAg seroconversion was 80 weeks (IQR: 36-162). HBeAg decline at week 24 was associated with HBeAg seroconversion (1.63 vs 0.90 log10 PEIU/mL, P = .002). The optimal threshold for identifying HBeAg seroconversion was HBeAg decline >/=2.2 log10 PEIU/mL at week 24, with HBeAg seroconversion achieved by 76% of patients, compared to 44% if HBeAg decline <2.2 log10 (P < .0001). HBeAg decline >/=2.2 log10 PEIU/mL at week 24 was associated with HBsAg loss in genotype A or D patients (38% vs 15%, P = .03). Precore/basal core promotor variants were associated with lower baseline HBeAg levels, but not HBeAg seroconversion. CONCLUSION: Decline in HBeAg levels by week 24 was associated with HBeAg seroconversion and HBsAg loss in HBeAg-positive chronic hepatitis B patients treated with long-term TDF.
Validation and Assessment of Three Methods to Estimate 24-h Urinary Sodium Excretion from Spot Urine Samples in High-Risk Elder Patients of Stroke from the Rural Areas of Shaanxi Province.[Pubmed:29019912]
Int J Environ Res Public Health. 2017 Oct 11;14(10). pii: ijerph14101211.
Background: 24-h urine collection is regarded as the "gold standard" for monitoring sodium intake at the population level, but ensuring high quality urine samples is difficult to achieve. The Kawasaki, International Study of Sodium, Potassium, and Blood Pressure (INTERSALT) and Tanaka methods have been used to estimate 24-h urinary sodium excretion from spot urine samples in some countries, but few studies have been performed to compare and validate these methods in the Chinese population. Objective: To compare and validate the Kawasaki, INTERSALT and Tanaka formulas in predicting 24-h urinary sodium excretion using spot urine samples in 365 high-risk elder patients of strokefrom the rural areas of Shaanxi province. Methods: Data were collected from a sub-sample of theSalt Substitute and Stroke Study. 365 high-risk elder patients of stroke from the rural areas of Shaanxi province participated and their spot and 24-h urine specimens were collected. The concentrations of sodium, potassium and creatinine in spot and 24-h urine samples wereanalysed. Estimated 24-h sodium excretion was predicted from spot urine concentration using the Kawasaki, INTERSALT, and Tanaka formulas. Pearson correlation coefficients and agreement by Bland-Altman method were computed for estimated and measured 24-h urinary sodium excretion. Results: The average 24-h urinary sodium excretion was 162.0 mmol/day, which representing a salt intake of 9.5 g/day. Three predictive equations had low correlation with the measured 24-h sodium excretion (r = 0.38, p < 0.01; ICC = 0.38, p < 0.01 for the Kawasaki; r = 0.35, p < 0.01; ICC = 0.31, p < 0.01 for the INTERSALT; r = 0.37, p < 0.01; ICC = 0.34, p < 0.01 for the Tanaka). Significant biases between estimated and measured 24-h sodium excretion were observed (all p < 0.01 for three methods). Among the three methods, the Kawasaki method was the least biased compared with the other two methods (mean bias: 31.90, 95% Cl: 23.84, 39.97). Overestimation occurred when the Kawasaki and Tanaka methods were used while the INTERSALT method underestimated 24-h sodium excretion. Conclusion: The Kawasaki, INTERSALT and Tanaka methods for estimation of 24-h urinary sodium excretion from spot urine specimens were inadequate for the assessment of sodium intake at the population level in high-risk elder patients of stroke from the rural areas of Shaanxi province, although the Kawasaki method was the least biased compared with the other two methods.