RPI
0 ratings
[ONPG] 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams
genuine image
[ONPG] 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams
High purity and solubility make it indispensable for research applications.
[ONPG] 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams
RPI

Item #: 81622265

[ONPG] 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams

Item #: 81622265

NAD 2082

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Only 5 items left in stock.
Order now and get it around Friday, September 11
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
High purity and solubility make it indispensable for research applications.
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High Purity
This 2-Nitrophenyl-B-D-Galactopyranoside offers exceptional purity, ensuring reliable results for biochemical assays and reactions, outperforming competitor products in accuracy and consistency.
Versatile Applications
Ideal for enzyme assays and research purposes, this compound serves multiple scientific applications, making it a valuable addition for laboratory work in microbiology and biochemistry.
Easy Handling
Packaged in a convenient 5-gram size, it provides ease of use for researchers, minimizing waste while allowing precise measurements for experiments, enhancing the overall lab efficiency.

Product Details

Shop [ONPG] 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams online at a best price in Namibia. B00I31NMDA
  • CAS Number: 369-07-3
  • Molecular Weight: 301.3
  • Chemical Purity: >99%
  • Soluble in: DMSO and DMFO
  • Product is sold for research or further manufacturing use only, not for food or drug use.
% Assay of Chemical(s)99
Item Weight27.22 g
Brand NameRPI
ManufacturerRPI, Corp.
Part NumberN81000-5.0
BrandRPI
Percentage assay99

Who Should Buy?

Suitable For
  • Biochemistry Students

    Ideal for students studying enzyme kinetics and carbohydrate metabolism in laboratory settings requiring high-quality substrates.

  • Research Laboratories

    Useful for microbiology and biochemistry research focusing on lactose utilization and enzyme activity tests.

  • Educational Institutions

    Perfect for institutions conducting practical experiments in enzyme activity, aiding learning of enzyme-substrate interactions.

Not Suitable For
  • Casual Users

    Not suitable for non-scientific users or hobbies lacking a clear need for biochemical reagents.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is ONPG and what is it used for?

    Answer: ONPG, or 2-Nitrophenyl-B-D-Galactopyranoside, is a synthetic compound widely used in biochemical research. It serves as a substrate in enzyme assays, particularly for detecting the activity of the enzyme beta-galactosidase. When cleaved by this enzyme, ONPG produces a yellow chromophore, allowing for quantitative measurement. Its application is common in microbiology labs for studying lactose metabolism in various organisms.
  • Question: What are the storage conditions for ONPG?

    Answer: ONPG should be stored at a temperature ranging from 2 to 8 degrees Celsius, protected from light. Proper storage is crucial to maintain its stability and activity, preventing degradation. Ensure the container is tightly sealed to avoid moisture absorption. This practice helps maintain the integrity of the compound for accurate experimental results in enzymatic assays.
  • Question: How is ONPG typically used in laboratory experiments?

    Answer: In laboratory settings, ONPG is primarily used in assays to detect beta-galactosidase activity. Researchers prepare a reaction mix that includes ONPG and the biological sample suspected of producing the enzyme. After incubation, the intensity of the yellow color developed is measured using a spectrophotometer, indicating the enzyme’s activity level, which is critical in various biochemical analyses.
  • Question: Is ONPG safe to handle in the lab?

    Answer: While ONPG is generally considered safe, it should be handled with care, using appropriate personal protective equipment, such as gloves and goggles. Accidental ingestion or skin exposure should be avoided. As with all chemicals, consult the Safety Data Sheet (SDS) for information on hazards and safe handling procedures to minimize risks and ensure a safe working environment.
  • Question: Can ONPG be used in urgent scientific testing?

    Answer: Yes, ONPG can be used in urgent scientific testing, especially in microbiological studies requiring fast and reliable results for lactose fermentation assays. Its quick reaction time allows researchers to obtain actionable data rapidly, facilitating timely decision-making in experiments and studies focused on lactose metabolism in various pathogens or cell cultures.
  • Question: What reactions can ONPG undergo in the presence of beta-galactosidase?

    Answer: In the presence of beta-galactosidase, ONPG undergoes hydrolysis, resulting in the release of galactose and 2-nitrophenol. This reaction produces a yellow color, which can be tracked to measure enzyme activity. This property enables researchers to determine the ability of various microorganisms to utilize lactose, making ONPG a valuable tool in assessing microbial metabolism.
  • Question: What are the typical applications of ONPG in industry?

    Answer: In industry, ONPG is commonly applied in microbiological quality control, particularly in the dairy and food industry, where lactose fermentation must be monitored. It is used to assess the capability of lactose-utilizing bacteria in fermented products. Moreover, ONPG assists in various molecular biology applications to understand genetic expression related to lactose metabolism.
  • Question: How can I confirm the quality or purity of ONPG?

    Answer: To confirm the quality or purity of ONPG, researchers can perform a spectrophotometric analysis to measure absorbance characteristics that correspond to pure samples. Additionally, comparing the performance of curves and reaction times against standard benchmarks can ensure its reliability in assays, enabling accurate and reproducible data in scientific experiments.
  • Question: What is the shelf life of ONPG after opening?

    Answer: The shelf life of ONPG after opening generally depends on storage conditions, and it is advisable to use it within a few months for optimal results. To maintain stability, store it properly at low temperatures and avoid exposure to light. Regularly checking for color changes in the solution can help assess its viability for ongoing experiments.
  • Question: Where can I buy ONPG 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams?

    Answer: You can buy ONPG 2-Nitrophenyl-B-D-Galactopyranoside, 5 Grams at Ubuy in Namibia. Ubuy offers a reliable platform for purchasing laboratory materials, ensuring you access quality products for your scientific needs quickly and conveniently.

RPI Standards Editorial Review

No editorial reviews found

Customer Reviews & Ratings

1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Platform Trust & Buyer Confidence

trustpilot logo
4.2/5 9250 + reviews
Read reviews
MA
Mohammad
Verified buyer

“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer

“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
K
kund
Verified buyer

“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer

“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer

“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

NAD 2082

Order now and get it around Friday, September 11

QTY:

Only 5 items left in stock.
Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • High chemical purity of over 99%.
  • Suitable for colorimetric and spectrophotometric detection.
  • Specifically designed for detecting β-D-Galactosidase.
  • Soluble in DMSO and DMFO for versatile use.
  • Ideal for research and further manufacturing applications.
  • Not intended for food or drug use.

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.