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64306

Sigma-Aldrich

S-Methyl methanethiosulfonate

purum, ≥98.0% (GC)

Synonym(s):

S-Methyl thiomethanesulfonate, MMTS

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About This Item

Linear Formula:
CH3SO2SCH3
CAS Number:
2949-92-0
Molecular Weight:
126.20
Beilstein/REAXYS Number:
1446059
EC Number:
220-970-0
MDL number:
MFCD00007565
UNSPSC Code:
12352100
PubChem Substance ID:
329759952
NACRES:
NA.22

grade

purum

Quality Level

200

assay

≥98.0% (GC)

refractive index

n20/D 1.513 (lit.)
n20/D 1.513

bp

69-71 °C/0.4 mmHg (lit.)

solubility

chloroform: 750mg + 5 ml Chloroform mg/mL, colorless to light greenish-yellow

density

1.337 g/mL at 20 °C
1.337 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CSS(C)(=O)=O

InChI

1S/C2H6O2S2/c1-5-6(2,3)4/h1-2H3

InChI key

XYONNSVDNIRXKZ-UHFFFAOYSA-N

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Application


  • Modification of Thiol Enzymes: S-methyl methanethiosulfonate (MMTS) offers a unique method for the modification of thiol enzymes and redox-regulated proteins, providing potential applications in biochemical research focused on enzyme regulation and redox biology (Makarov et al., 2019).

  • Sensor Development for Protease Activity: S-methyl methanethiosulfonate is used as a blocking reagent on the structural transitions of papain-like cysteine proteases, which supports its utility in sensor development, allowing for the detection and analysis of protease activity in various biological processes (Markovic et al., 2023).

  • Agricultural Pathogen Control: Research evaluating S-methyl methanethiosulfonate as a late blight inhibitor highlights its potential as a broad-range toxin against plant pathogens, suggesting applications in agriculture for the management of crop diseases (Joller et al., 2020).

Caution

may discolor to yellow on storage

Other Notes

Methylsulfenylating agent with many applications; For the α-methylsulfenylation of cyclic ketones; Methyl disulfides from thiols; selective, reversible inactivation of enzymes

wgk_germany

WGK 2

flash_point_f

closed cup

flash_point_c

closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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D. Scholz
Synthesis, 944-944 (1983)
P J Britto et al.
The Biochemical journal, 389(Pt 2), 549-558 (2005-03-04)
All 20 cysteine residues are accessible to disulphide reagents in the tubulin dimer, whereas only four are accessible in taxol-stabilized microtubules. Reaction rates with disulphide reagents are a function of the reagent, are decreased by G nucleotides, and increased with
P. Laszlo et al.
The Journal of Organic Chemistry, 49, 2281-2281 (1984)
W H Briggs et al.
Journal of agricultural and food chemistry, 48(11), 5731-5735 (2000-11-23)
Thiosulfinates (TSs) have been implicated as a principle source of the antiplatelet property of raw onion and garlic juice. The in vitro responses of human platelets to dosages of four TSs were measured using whole blood aggregometry and compared by
D J Smith et al.
Biochemistry, 14(4), 766-771 (1975-02-25)
New reagents for the temporary blocking of active or accessible sulfhydryl groups of enzymes have been developed. These reagents, which are either alkyl alkanethiolsulfonates or alkoxycarbonylalkyl disulfides, rapidly and quantitatively place various RS- groups on the sulfhydryls to generate mixed
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