Skip to Content
MilliporeSigma

1432005

USP

Methylparaben

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Methyl 4-hydroxybenzoate, p-Hydroxybenzoic acid methyl ester, Methyl paraben, NIPAGIN

Sign In to View Organizational & Contract Pricing.

Select a Size

125 MG

$462.00

$462.00


Available to ship TODAYDetails


Ships Every 4 weeks

About This Item

Linear Formula:
HOC6H4CO2CH3
CAS Number:
Molecular Weight:
152.15
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
509801

Skip To

Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI

1S/C8H8O3/c1-11-8(10)6-2-4-7(9)5-3-6/h2-5,9H,1H3

SMILES string

COC(=O)c1ccc(O)cc1

InChI key

LXCFILQKKLGQFO-UHFFFAOYSA-N

grade

pharmaceutical primary standard

API family

parabens

manufacturer/tradename

USP

mp

125-128 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
1.0675754752W271004
manufacturer/tradename

USP

manufacturer/tradename

-

manufacturer/tradename

-

manufacturer/tradename

-

grade

pharmaceutical primary standard

grade

-

grade

-

grade

Fragrance grade, Kosher

format

neat

format

-

format

-

format

-

application(s)

pharmaceutical (small molecule)

application(s)

liquid formulation
ophthalmics
parenterals
pharmaceutical
semi-solid formulation
solid formulation

application(s)

pharmaceutical (small molecule)

application(s)

flavors and fragrances

API family

parabens

API family

-

API family

-

API family

-

mp

125-128 °C (lit.)

mp

125 °C

mp

125-128 °C (lit.)

mp

125-128 °C (lit.)

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Methylparaben USP reference standard for specified quality tests and assay use only.

Also used to prepare the standard, standard stock, system suitability, and system suitability stock solutions for assay, identification, and performance test according to the given below monographs of United States Pharmacopeia (USP):
  • Methylparaben[1]
  • Methylparaben Sodium[2]
  • Dexamethasone Oral Solution[3]
  • Ethylparaben Sodium[4]
  • Benzaldehyde[5]

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

pictograms

Environment

hcodes

Hazard Classifications

Aquatic Chronic 2

flash_point_f

334.4 °F

flash_point_c

168 °C

Storage Class

11 - Combustible Solids


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Methylparaben
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 36(5), 5886-5886 (2020)
Methylparaben Sodium
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 39(5), 5887-5887 (2014)
Benzaldehyde
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 38(1), 5632-5632 (2020)
Ethylparaben Sodium
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 41(1), 5773-5773 (2016)
Dexamethasone Oral Solution
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 43(6), 1288-1288 (2014)

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service