Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

M84445

Sigma-Aldrich

S-Methylisothiourea hemisulfate salt

98%

Synonym(s):

2-Methyl-2-thiopseudourea hemisulfate salt, S-Methyl-ITU, S-Methylthiuronium sulfate, SMT

Sign Into View Organizational & Contract Pricing

Select a Size

100 G
$33.63
500 G
$44.55

$33.63

List Price$35.40
Web-Only Promotion

Available to ship onApril 29, 2025Details

Request a Bulk Order
All Photos(1)

Select a Size

Change View
100 G
$33.63
500 G
$44.55

About This Item

Linear Formula:
HN=C(NH2)SCH3 · 1/2H2SO4
CAS Number:
867-44-7
Molecular Weight:
139.19
Beilstein/REAXYS Number:
3717365
EC Number:
212-759-7
MDL number:
MFCD00013055
UNSPSC Code:
12352100
PubChem Substance ID:
24897262
NACRES:
NA.22

$33.63

List Price$35.40
Web-Only Promotion

Available to ship onApril 29, 2025Details

Request a Bulk Order

Quality Level

100

assay

98%

form

crystals

mp

240-241 °C (dec.) (lit.)

SMILES string

CSC(N)=N.CSC(N)=N.OS(O)(=O)=O

InChI

1S/2C2H6N2S.H2O4S/c2*1-5-2(3)4;1-5(2,3)4/h2*1H3,(H3,3,4);(H2,1,2,3,4)

InChI key

BZZXQZOBAUXLHZ-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Biochem/physiol Actions

More potent than NMMA as an inhibitor of inducible nitric oxide synthetase (iNOS).

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
STBL4181
STBK6814
STBJ8295
STBJ6039
STBJ1438

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

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

Visit the Document Library

Leilei Bai et al.
Environmental pollution (Barking, Essex : 1987), 230, 87-95 (2017-06-27)
Phytoplankton-derived dissolved organic matter (PDOM) and macrophyte-derived dissolved organic matter (MDOM) exist ubiquitously in eutrophic freshwater lakes. To understand the heterogeneous roles of individual fluorescent DOM components in the adsorption of antibiotics onto sediment minerals, the adsorptive fractionation of DOM
Nicholas H Kirkerud et al.
Frontiers in behavioral neuroscience, 11, 94-94 (2017-06-08)
The honeybee has been established as an important model organism in studies on visual learning. So far the emphasis has been on appetitive conditioning, simulating floral discrimination, and homing behavior, where bees perform exceptionally well in visual discrimination tasks. However
Paolo Caraceni et al.
Lancet (London, England), 391(10138), 2417-2429 (2018-06-05)
Evidence is scarce on the efficacy of long-term human albumin (HA) administration in patients with decompensated cirrhosis. The human Albumin for the treatmeNt of aScites in patients With hEpatic ciRrhosis (ANSWER) study was designed to clarify this issue. We did
Drew Shindell et al.
GeoHealth, 4(4), e2019GH000234-e2019GH000234 (2020-04-08)
Exposure to high ambient temperatures is an important cause of avoidable, premature death that may become more prevalent under climate change. Though extensive epidemiological data are available in the United States, they are largely limited to select large cities, and
Laiyi Fu et al.
Scientific reports, 7(1), 14482-14482 (2017-11-05)
Cumulative evidence from biological experiments has confirmed that microRNAs (miRNAs) are related to many types of human diseases through different biological processes. It is anticipated that precise miRNA-disease association prediction could not only help infer potential disease-related miRNA but also
View All Related Papers

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/449/386/product-dating-information-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