structure of 3920-38-5

1,3-Dimethyl-4-Nitro-1H-Pyrazole(CAS 3920-38-5)

CAS No.: 3920-38-5 Brand: MolBest
M. Ft.: C5H7N3O2 Cat. No: G6136914
M. Wt.: 141.13 MDL: MFCD00464263
Storage: 2-8°C Use: For laboratory research use only
HS CODE: 2933199090
Purity Grade Package Stock Price Quantity
95%
Documents:COANMRSDS
RG 1G In Stock 5 USD
95%
Documents:COANMRSDS
RG 5G In Stock 25 USD
95%
Documents:COANMRSDS
RG 100G In Stock 466 USD
95%
Documents:COANMRSDS
RG 500G In Stock 2238 USD
Your region is eligible for ordering.
Should you have any questions, please contact us by Email.
Batch COA
Available
NMR Spectrum
Verified
In Stock
Fast Shipping
ISO 9001
Quality System

Quick Links

Applications of 3920-38-5

Industry Application Process
Pesticides Intermediate for novel insecticides, used in synthesizing pyrazole-based insecticides (e.g., flufiprole) Undergoes substitution or condensation reactions with haloalkanes, amines, etc., to construct the active molecular scaffold
Pharmaceuticals Intermediate for drug synthesis, applied in R&D of anti-inflammatory and antitumor candidate drugs Participates in cycloaddition, reduction, and coupling reactions to introduce the pyrazole ring structure
Materials Science Precursor for functional materials, used in synthesizing nitrogen-containing heterocyclic polymers or fluorescent dyes Acts as an energetic group or ligand in polymerization or metal coordination reactions

Physical and chemical properties of 3920-38-5

Acidity coefficient

-1.60±0.10(Predicted)

Boiling Point

243.0±20.0 °C at 760 mmHg

Density

1.4±0.1 g/cm3

Exact Mass

141.053833

Flash Point

100.7±21.8 °C

Index of Refraction

1.599

LogP

0.90

Melting Point

72 °C

Molecular Formula

C5H7N3O2

Molecular Weight

141.128

PSA

63.64000

Storage condition

2-8°C

Vapour Pressure

0.1±0.5 mmHg at 25°C

Spectrums of 3920-38-5

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 3920-38-5

Retrosynthesis analysis of 3920-38-5


Q&A for CAS 3920-38-5

1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.

2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.

3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.

4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.

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

6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.

7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.

8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available 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 Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.

10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.

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

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

Download SDS of 3920-38-5

Pictograms

Signal Word

Warning

Hazard Statements

H302 Harmful if swallowed

Safety Data Sheet

Download COA of 3920-38-5

CAS/Product ID
*Required fields
Lot/Batch Number
*Required fields

Operate under the ISO 9001 system