structure of 128-57-4

Sennoside B(CAS 128-57-4)

CAS No.: 128-57-4 Brand: MolBest
M. Ft.: C42H38O20 Cat. No: G6107867
M. Wt.: 862.74 MDL: No record
Storage: 2-8°C Use: For laboratory research use only
Purity Grade Package Stock Price Quantity
97%
Documents:COANMRSDS
RG 1ML In Stock 707 USD
97%
Documents:COANMRSDS
RG 5ML In Stock 2829 USD
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Physical and chemical properties of 128-57-4

Acidity coefficient

3.31±0.40(Predicted)

Boiling Point

1144.80 °C. @ 760.00 mm Hg (est)

BRN

5723747

Density

1.7±0.1 g/cm3

Exact Mass

862.195618

Flash Point

348.6±27.8 °C

Index of Refraction

1.763

LogP

-0.686

Melting Point

209～212℃

Molecular Formula

C42H38O20

Molecular Weight

862.739

PSA

347.96000

Solubility

1e+006 mg/L @ 25 °C (est)

Specific rotation

D20 -100° (c = 0.2 in 70% acetone); D20 -67° (c = 0.4 in 70% dioxane)

Stability

Hygroscopic

Storage condition

2-8°C

Vapour Pressure

0.0±0.3 mmHg at 25°C

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Spectrums of 128-57-4

Attention:
1.The NMR spectrum displayed on the page is a pre-sale reference spectrum and may differ from that of the actual received batch.
2.The accompanying documentation will include the NMR spectrum and purity analysis data for the shipped batch.
Physical sample testing spectrum (NMR) of 128-57-4

Download SDS of 128-57-4

Pictograms

Signal Word

 Danger

Hazard Statements

 H302 Harmful if swallowed
H317 May cause an allergic skin reaction
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled

Safety Data Sheet
SDS of
128-57-4.pdf

Q&A for CAS 128-57-4

1. How can I verify product quality?
Every batch is tested in accordance with ISO 9001 requirements. We provide a Certificate of Analysis (COA), NMR spectrum, purity report, and test methods with each shipment. Third-party retesting is supported, and we offer a full refund if our data is incorrect.

2. What is the delivery time?
Orders are shipped on the second business day via FedEx, DHL, or UPS. International deliveries typically arrive within 7 business days (subject to customs clearance).

3. What if the received product doesn’t meet quality standards?
If the product does not match the COA or has a quality issue, we will issue a full refund or replacement upon verification.

4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged in compliance with international regulations and shipped with an up-to-date Safety Data Sheet (SDS) to ensure safe and compliant transport.

5. Do you offer technical support?
Yes. Our technical team is available to assist with questions about product use, storage, purity requirements, applications, and more.

6. Are volume discounts available?
Yes. We offer competitive pricing for bulk orders. Please submit a quotation request, and we’ll provide a customized offer.

7. Do you provide samples?
Yes, samples are available for select products for testing and validation. Please submit a sample request or contact our sales team to confirm availability and specifications.

8. Do you have products in stock?
Items marked “In Stock” on our website are ready for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.

9. Can you customize purity or packaging?
Yes. We support customization of purity, packaging size, and special testing requirements. Please share your detailed needs, and we’ll provide a solution.

10. Is the COA consistent with the shipped batch?
Yes. The COA provided with your shipment matches the actual batch and includes the batch number. COAs shown online are for reference or from previous batches.

11. Do you support long-term supply agreements?
Yes. We offer stable batch consistency, pricing agreements, and safety stock options for long-term customers to ensure uninterrupted supply.

12. What payment methods do you accept?
We accept bank transfer (T/T), PayPal, and other methods. Credit terms may be available for qualified long-term partners.

Applications of 128-57-4

Sennoside B has several applications:

  • Laxative: Primarily used in over-the-counter laxatives for treating constipation.
  • Herbal Medicine: Incorporated into various herbal formulations aimed at digestive health.
  • Research: Studied for its potential gastroprotective effects and other pharmacological activities.

Operate under the ISO 9001 system