(R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid
SIAL/65361 - for chiral derivatization, LiChropur™, ≥99.0%
Synonym: (+)-MTPA; Mosher’s acid
CAS Number: 20445-31-2
Empirical Formula (Hill Notation): C10H9F3O3
Molecular Weight: 234.17
EC Number: 243-829-5
MDL Number: MFCD00004184
Linear Formula: C6H5C(OCH3)(CF3)CO2H
Product Type: Chemical
assay | ≥99.0% |
≥99.0% (T) | |
bp | 105-107 °C/1 mmHg (lit.) |
density | 1.344 g/mL at 25 °C (lit.) |
form | solid |
grade | for chiral derivatization |
InChI | 1S/C10H9F3O3/c1-16-9(8(14 |
InChI key | JJYKJUXBWFATTE-SECBINFHSA |
mp | 46-49 °C (lit.) |
optical activity | [α]20/D +73±1°, c = 2% in methanol |
optical purity | enantiomeric ratio: ≥99.5:0.5 (GC) |
quality | LiChropur™ |
Quality Level | 100 ![]() |
refractive index | n |
SMILES string | CO[C@@](C(O)=O)(c1ccccc1) |
storage temp. | 2-8°C |
technique(s) | HPLC: suitable |
Application: | Mosher’s acid chloride is used as a dervatization agent for β-arylethylamines, enantiomeric alcohols, and enantiomeric amines. It is also a reagent used for the determination of enantiomeric purity and absolute configuration of alcohols and amines by NMR. |
General description: | 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. |
Legal Information: | LiChropur is a trademark of Merck KGaA, Darmstadt, Germany |
Packaging: | Bottomless glass bottle. Contents are inside inserted fused cone. |
Recommended products: | Discover LiChropur reagents ideal for HPLC ![]() ![]() |
Symbol | ![]() |
Signal word | Warning |
Hazard statements | H315 - H319 - H335 |
Precautionary statements | P302 + P352 - P305 + P351 + P338 |
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 26-36 |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 3 |
Flash Point(F) | 235.4 °F - closed cup |
Flash Point(C) | 113 °C - closed cup |
Purity | ≥99.0% (T); ≥99.0% |
bp | 105-107 °C/1 mmHg (lit.) |
mp | 46-49 °C (lit.) |
Density | 1.344 g/mL at 25 °C (lit.) |
Refractive Index | n |
Storage Temp. | 2-8°C |
UNSPSC | 12000000 |