(+)-DIACETYL-L-TARTARIC ANHYDRIDE
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(+)-DIACETYL-L-TARTARIC ANHYDRIDE 속성
- 녹는점
- 130-135 °C(lit.)
- 끓는 점
- 316.55°C (rough estimate)
- 밀도
- 1.5197 (rough estimate)
- 굴절률
- 90 ° (C=0.5, CHCl3)
- 저장 조건
- 2-8°C
- 용해도
- 아세톤, 클로로포름(약간 용해됨 가열)
- 물리적 상태
- 바늘 크리스탈
- 색상
- 하얀색
- optical activity
- [α]20/D +59°, c = 6 in acetone
- 수용성
- 메탄올과 디클로로메탄에 용해됩니다. 물에 약간 용해됩니다.
- 감도
- Moisture Sensitive
- BRN
- 87315
- CAS 데이터베이스
- 6283-74-5(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
(+)-DIACETYL-L-TARTARIC ANHYDRIDE C화학적 특성, 용도, 생산
화학적 성질
White Crystalline Solid용도
Di-O-acetyl-L-tartaric Anhydride (cas# 6283-74-5) is a compound useful in organic synthesis.일반 설명
(+)-O,O′-Diacetyl-L-tartaric anhydride is an HPLC derivatization reagent for UV/Vis detection. It is mainly employed as a reagent for the chiral derivatization of amino alcohols. It also reacts with alkanoamines in aprotic medium containing trichloroacetic acid and produces tartaric acid monoesters.Purification Methods
If the IR is good, i.e. no OH bands, then keep it in a vacuum desiccator overnight (over P2O5/paraffin) before use. If OH bands are present then reflux 4g in Ac2O (12.6mL) containing a few drops of conc H2SO4 for 10minutes (use a relatively large flask), pour onto ice, collect the crystals, wash with dry *C6H6 (2 x 2mL), stir with 17mL of cold Et2O, filter and dry in it a vacuum desiccator as above, or store it in dark evacuated ampoules under N2 in small aliquots. It is not very stable in air, the melting point of the crystals drop one degree in the first four days then remains constant (132-134o). If placed in a stoppered bottle, it becomes gummy and the m falls 100o in three days. Recrystllisation leads to decomposition. If good quality anhydride is required it, should be prepared freshly from tartaric acid. It sublimes in a CO2 atmosphere. [Shriner & Furrow Org Synth Coll Vol IV 242 1963, Bell Aust J Chem 34 671 1981, Beilstein 18 III/IV 2296.](+)-DIACETYL-L-TARTARIC ANHYDRIDE 준비 용품 및 원자재
원자재
준비 용품
(+)-DIACETYL-L-TARTARIC ANHYDRIDE 공급 업체
글로벌( 131)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
CONIER CHEM AND PHARMA LIMITED | +8618523575427 |
sales@conier.com | China | 49391 | 58 |
Zhengzhou Alfa Chemical Co.,Ltd | +8618530059196 |
sale04@alfachem.cn | China | 13214 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | 0551-65418671 |
sales@tnjchem.com | China | 34571 | 58 |
Shanghai UCHEM Inc. | +862156762820 +86-13564624040 |
sales@myuchem.com | China | 7034 | 58 |
ANHUI WITOP BIOTECH CO., LTD | +8615255079626 |
eric@witopchemical.com | China | 23556 | 58 |
Dayang Chem (Hangzhou) Co.,Ltd. | 571-88938639 +8617705817739 |
info@dycnchem.com | China | 52861 | 58 |
GIHI CHEMICALS CO.,LIMITED | +8618058761490 |
info@gihichemicals.com | China | 50000 | 58 |
LEAPCHEM CO., LTD. | +86-852-30606658 |
market18@leapchem.com | China | 43348 | 58 |
Aladdin Scientific | +1-+1(833)-552-7181 |
sales@aladdinsci.com | United States | 57511 | 58 |
Amadis Chemical Company Limited | 571-89925085 |
sales@amadischem.com | China | 131980 | 58 |
(+)-DIACETYL-L-TARTARIC ANHYDRIDE 관련 검색:
메틸 (R)-젖산
(+/-)-3-HYDROXY-GAMMA-BUTYROLACTONE
(+)-DIACETYL-L-TARTARIC ANHYDRIDE
4-Iodophenol
Ethyl ethoxyacetate
(-)-1,4-ANHYDRO-L-THREITOL
METHYL 2-METHOXYPROPIONATE
Acetoxyacetic acid
(R)-(+)-2-Acetoxysuccinic anhydride
(R)-(+)-2-METHOXYPROPIONIC ACID
(R)-(+)-ALPHA-HYDROXY-GAMMA-BUTYROLACTONE
(+)-DIBENZOYL-L-TARTARIC ANHYDRIDE
ALPHA-HYDROXY-GAMMA-BUTYROLACTONE
DI-(4-TOLUOYL)-L-TARTARIC ANHYDRIDE
(+/-)-2-ACETOXYPROPIONIC ACID
L-Threonolactone
(R)-3-ACETOXY-GAMMA-BUTYROLACTONE
(-)-DIACETYL-D-TARTARIC ANHYDRIDE