65363

(R)-(−)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride

for chiral derivatization, LiChropur^™, ≥99.0%

• Synonym(s): (R)-(−)-MTPA-Cl, Mosher’s acid chloride
• Linear Formula: C₆H₅C(OCH₃)(CF₃)COCl
• CAS Number: 39637-99-5
• Molecular Weight: 252.62
• Beilstein/REAXYS Number: 3591563
• MDL number: MFCD00044400
• UNSPSC Code: 12000000
• PubChem Substance ID: 329760054
• NACRES: NA.22

Properties

• grade: for chiral derivatization
• Quality Level: 100
• product line: ChiraSelect^™
• assay: ≥99.0% (AT); ≥99.0%
• optical activity: [α]20/D −137±2°, c = 6.4% in carbon tetrachloride
• optical purity: enantiomeric ratio: ≥99.5:0.5 (GC)
• quality: LiChropur^™
• technique(s): HPLC: suitable
• refractive index: n20/D 1.469; n20/D 1.47 (lit.)
• bp: 213-214 °C (lit.)
• density: 1.35 g/mL at 25 °C (lit.)
• shipped in: wet ice
• storage temp.: −20°C
• SMILES string: CO[C@](C(Cl)=O)(c1ccccc1)C(F)(F)F
• InChI: 1S/C10H8ClF3O2/c1-16-9(8(11)15,10(12,13)14)7-5-3-2-4-6-7/h2-6H,1H3/t9-/m0/s1
• InChI key: PAORVUMOXXAMPL-VIFPVBQESA-N

Description

General description

(R)-(-)-a-Methoxy-a-(trifluoromethyl)phenylacetyl chloride (Mosher′s acid chloride) is generally used as a chiral derivatizing agent. It is easily available in enantiomerically pure form. It can form diastereomers with both alcohols and amines.

Application

It was used for derivatizing D-arabinitol and L-arabinitol samples for high performance thin layer chromatography (HPTLC) analysis for studying resolution of the diastereoisomer.

Ready-to-use reagent for the determination of the enantiomeric purity of alcohols and amines after derivatization; doi:10.1038/nprot.2007.354

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Please note that R(-)-MTPA-Cl is derived from S(-)-MTPA

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Legal Information

ChiraSelect is a trademark of Sigma-Aldrich Co. LLC

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H314
• pcodes: P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363 - P405
• Hazard Classifications: Skin Corr. 1B
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 3
• flash_point_f: 192.2 °F - closed cup
• flash_point_c: 89 °C - closed cup
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter