Fmoc-Asp(OtBu)-OH
Synonym(s):Fmoc-L -aspartic acid 4-tert-butyl ester;Fmoc-Asp(OtBu)-OH;N-α-Fmoc-L-aspartic acid β-t.-butyl ester
- CAS NO.：71989-14-5
- Empirical Formula: C23H25NO6
- Molecular Weight: 411.45
- MDL number: MFCD00037131
- EINECS: 276-251-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-02 14:09:54
What is Fmoc-Asp(OtBu)-OH?
Chemical properties
Fmoc-Asp(OtBu)-OH is a protected form of L-aspartic acid. It is a white to light yellow crystal powder. The molecule contains ester groups and amino groups, making it prone to polymerization and unstable over time. Therefore, it is not recommended to store it for extended periods.
The Uses of Fmoc-Asp(OtBu)-OH
L-Aspartic acid is a nonessential amino acid that is used to biosynthesize other amino acids within the human body.
Preparation
Fmoc-Asp(OtBu)-OH was prepared by substitution reaction with 9-fluorenylmethyl chloroformate from L-aspartic acid 4-tert-butyl ester.
General Description
The product number for this product was previously 04-12-1013.
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Properties of Fmoc-Asp(OtBu)-OH
| Melting point: | 148-150 °C (dec.) |
| Boiling point: | 530.45°C (rough estimate) |
| alpha | -25 º (c=1,DMF 24 ºC) |
| Density | 1.2498 (rough estimate) |
| refractive index | -25 ° (C=1, DMF) |
| storage temp. | 2-8°C |
| solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. |
| form | powder to crystal |
| pka | 3.57±0.23(Predicted) |
| color | White to Almost white |
| optical activity | [α]20/D 24±2°, c = 1% in DMF |
| Water Solubility | Slightly soluble in water. |
| BRN | 3635671 |
| CAS DataBase Reference | 71989-14-5(CAS DataBase Reference) |
Safety information for Fmoc-Asp(OtBu)-OH
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H225:Flammable liquids H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P363:Wash contaminated clothing before reuse. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P370+P378:In case of fire: Use … for extinction. P405:Store locked up. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..… |
Computed Descriptors for Fmoc-Asp(OtBu)-OH
| InChIKey | FODJWPHPWBKDON-IBGZPJMESA-N |
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product: 71989-14-5 Fmoc-L-Aspartic acid 95%
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product: Fmoc-L-aspartic acid 4-tert-butyl ester, 99%
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