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Sigma-Aldrich

α-Cyano-4-hydroxycinnamic acid

matrix substance for MALDI-MS, Ultra pure

Synonym(s):

α-CCA, α-CHCA, α-Cyano, 4-HCCA, ACCA

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About This Item

Linear Formula:
HOC6H4CH=C(CN)CO2H
CAS Number:
Molecular Weight:
189.17
Beilstein:
3271427
EC Number:
MDL number:
UNSPSC Code:
41116105
PubChem Substance ID:
NACRES:
NA.21

grade

matrix substance for MALDI-MS

Quality Level

form

solid

analyte chemical class(es)

glycans, peptides, proteins

technique(s)

MALDI-MS: suitable

mp

245-250 °C (lit.)
245-250 °C

solubility

methanol: 10 mg/mL, clear

cation traces

Al: ≤1 mg/kg
Ba: ≤1 mg/kg
Ca: ≤1 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤1 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Na: ≤1 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sr: ≤1 mg/kg
Zn: ≤1 mg/kg

storage temp.

2-8°C

SMILES string

OC(=O)\C(=C\c1ccc(O)cc1)C#N

InChI

1S/C10H7NO3/c11-6-8(10(13)14)5-7-1-3-9(12)4-2-7/h1-5,12H,(H,13,14)/b8-5+

InChI key

AFVLVVWMAFSXCK-VMPITWQZSA-N

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General description

α-Cyano-4-hydroxycinnamic acid (α-CHCA) functions as matrix and helps in facilitating ionization of proteins and peptides in a matrix-assisted laser desorption/ionization (MALDI) time-of-flight (TOF) mass spectrometer.

Application

It was used as matrix in improving the detection of low concentration protein digests on MALDI-TOF.

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Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Skin Sens. 1B

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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One of the most important aspects of our ultra-pure MALDI matrix substances is their ability to dissolve rapidly and completely; a brief vortex mixing is typically sufficient.

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