ChemicalBook CAS DataBase List 21668-81-5

21668-81-5

Name	3-S-Isothiuronium propyl sulfonate
CAS	21668-81-5
EINECS(EC#)	244-520-8
Molecular Formula	C4H10N2O3S2
MDL Number	MFCD00085942
Molecular Weight	198.26
MOL File	21668-81-5.mol

Chemical Properties

Appearance	White crystalline powder
Melting point	240 °C
Boiling point	276.6℃ at 101.325kPa
density	1.61±0.1 g/cm3(Predicted)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	water: soluble25mg/mL, clear, colorless
form	Solid:particulate/powder
pka	1.54±0.50(Predicted)
color	White to Almost white
biological source	human
LogP	-2
Surface tension	72.9mN/m at 1g/L and 20.2℃
CAS DataBase Reference	21668-81-5(CAS DataBase Reference)
EPA Substance Registry System	21668-81-5(EPA Substance)

Safety Data

Hazard Codes	C
Risk Statements	R34:Causes burns. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . less more
RIDADR	UN 3261 8/PG 2
WGK Germany	3
HazardClass	8
PackingGroup	III
HS Code	29309090

Hazard Information

Chemical Properties

White crystalline powder

Uses

The Proteomics Dynamic Range Standard Set can be used to standardize and/or evaluate mass spectrometric (e.g., LC-MS/MS, MALDI-TOF-MS, etc.) and electrophoretic analysis conditions prior to the analysis of complex protein samples. UPS2 can be used to bracket precious experimental data sets between runs of a known complex standard sample. This allows confirmation of the robustness of the analysis method and stability of the instrument employed. Additionally, laboratories generating or comparing mass spectrometric data derived from poorly defined samples can use UPS2 as an external reference to assist with the evaluation of results and experimental methodology.
Proteomics Dynamic Range Standard Set has been used for the quantification of dynamic range universal protein standard on Orbitrap Analyzer using all ion fragmentation. It has been used as a standard for intensity-based absolute quantification of proteins (iBAQ) in LC-MS (liquid chromatography-mass spectrometry)/MS analysis.

Application

Research has shown that 3-S-Isothiuronium propyl sulfonate(UPS)improves bath stability and increases the reaction activation energy. At lower concentration, UPS is an effective accelerator for EN deposition; whereas, at higher concentration, it decreases deposition rate. Moreover, UPS decreases the phosphorus content in Ni-P deposit and can be adsorbed on the deposit surface and compound with Ni2+.

Definition

quadrupole: A set of four pointcharges that has zero net charge anddipole moment. An example of aquadrupole is a carbon dioxide (CO₂)molecule. Quadrupole interactionsare much smaller than dipole interactions.Transitions involvingquadrupole moments are muchweaker than transitions involving dipolemoments, but can allow transitionsforbidden in dipole momenttransitions.

General Description

The Proteomics Dynamic Range Standard Set is produced from a mixture of 48 individual human source or human sequence recombinant proteins, each of which has been selected to limit heterogeneous post-translational modifications (PTMs). The protein standard is formulated from 6 mixtures of 8 proteins to present a dynamic range of 5 orders of magnitude, ranging from 50 pmoles to 500 amoles. Each protein has been quantitated by amino acid analysis (AAA) prior to formulation.

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