The physical form of this material may range from a faint yellow to yellow powder or crystals in an undiluted state. This information is lot-specific and reported in the product Certificate of Analysis. This product is packaged in the following:
70990-250MG-F
2mL polypropylene conical tube, skirted
70990-1G-F
5 mL polypropylene conical tube, skirted
Please see the link below to review a sample or lot-specific Certificate:
https://www.sigmaaldrich.com/product/sial/70990#product-documentation
70990
α-Cyano-4-hydroxycinnamic acid
suitable for matrix substance for MALDI-MS, ≥99.0% (HPLC)
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
UNSPSC Code:
41115710
NACRES:
NA.21
PubChem Substance ID:
EC Number:
248-879-1
Beilstein/REAXYS Number:
3271427
MDL number:
Assay:
≥99.0% (HPLC)
Form:
solid
Pricing and availability is not currently available.
Quality Segment
assay
≥99.0% (HPLC)
form
solid
analyte chemical class(es)
glycans, peptides, proteins
technique(s)
MALDI-MS: suitable
mp
245-250 °C
solubility
methanol: 10 mg/mL, clear
cation traces
Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤10 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
absorption
≥2000 at 337 nm (mol. absorption)
suitability
suitable for matrix substance for MALDI-MS
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
General description
Application
Other Notes
Matrix substoncitatioance used in MALDI-MS (matrix-assisted laser desorption ionization MS) peptide analysis in proteomics.
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This Item | |||
|---|---|---|---|
| description suitable for matrix substance for MALDI-MS, ≥99.0% (HPLC) | description suitable for matrix substance for MALDI-MS, Ultra pure | description 99% | description ≥98% (TLC), powder |
| assay ≥99.0% (HPLC) | assay - | assay 99% | assay ≥98% (TLC) |
| form solid | form solid | form solid | form powder |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| technique(s) MALDI-MS: suitable | technique(s) MALDI-MS: suitable | technique(s) - | technique(s) - |
| solubility methanol: 10 mg/mL, clear | solubility methanol: 10 mg/mL, clear | solubility - | solubility H2O: slightly soluble, methanol: water: soluble, polar organic solvents: soluble |
| absorption ≥2000 at 337 nm (mol. absorption) | absorption - | absorption - | absorption - |
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Signal Word
Warning
Hazard Codes
Precautionary Statements
Hazard Classifications
Skin Sens. 1B
Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
dust mask type N95 (US), Eyeshields, Gloves
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Hello, what is the product packaging, for example, the 250mg format? Is it sold undiluted
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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What can be used for solublization of α-Cyano-4-hydroxycinnamic acid?
1 answer-
α-Cyano-4-hydroxycinnamic acid (α-CCA, α-CHCA, α-Cyano, 4-HCCA, ACCA) is soluble in methanol (up to 50 mg/ml). It is also soluble at 10 mg/ml using 50% acetonitrile in 0.05% TFA for MALDI-MS. The acetonitrile concentration can be adjusted for individual preferences.For biological applications, it has been solubilized at 100 mM in DMSO or 50 mM in ethanol.
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What is the shelf life of Product 70990, α-Cyano-4-hydroxycinnamic acid?
1 answer-
This product does not have an Expiration or Recommended Re-Test date established for it. As with all Sigma-Aldrich products, it is guaranteed up to a year from date of shipment.
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What is the appearance of Product 70990, α-Cyano-4-hydroxycinnamic acid?
1 answer-
Catalog number 70990 is a powder, and has an appearance specification of faintly yellow to yellow in color.
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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