D-Thyroxine
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D-Thyroxine 속성
- 녹는점
- ~235 °C (dec.)
- 알파
- 21546 +2.97° (0.74 g in 6 g of 0.5N NaOH and 14 g of alcohol)
- 끓는 점
- 576.3±50.0 °C(Predicted)
- 밀도
- 2.4440 (estimate)
- 저장 조건
- Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
- 용해도
- 산성알코올(약간 용해됨), 산성수(약간 용해됨, 초음파 처리), 수성 염기(약간 용해됨)
- 물리적 상태
- 고체
- 물리적 상태
- 단단한 모양
- 산도 계수 (pKa)
- 2.12±0.30(Predicted)
- 색상
- 미색부터 베이지까지
- 안정성
- 흡습성
- CAS 데이터베이스
- 51-49-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xn | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 20/21/22-40 | ||
| 안전지침서 | 36/37-36-22 | ||
| WGK 독일 | 3 | ||
| F 고인화성물질 | 8-10 |
D-Thyroxine C화학적 특성, 용도, 생산
화학적 성질
beige to light grey powder용도
One of the thyroid hormones involved in the maintenance of metabolic homeostasis. Synthesized and stored as amino acid residues of thyroglobulin, the major protein component of the thyroid follicular colloid. Synthesis and secretion are regulated by the pituitary hormone (TSH). Deiodinated in peripheral tissues to the active metabolite, liothyronine. The D-form has very little activity as a thyroid hormone, but has been used to treat hyperlipidemia.정의
ChEBI: The D-enantiomer of thyroxine.Biological Functions
Dextrothyroxine, the synthetic D-(+)-stereoisomer isomer of L-(–)-T4, was introduced in hypocholesteremichypolipidemic therapy with the premise that it would be void of calorigenic effects. The possibility of trace contamination with and metabolic conversion to T4 and congeners has restricted its use, however, especially in patients with coronary heart disease.Mechanism of action
Dextrothyroxine speeds up the decomposition of cholesterol and lipoproteins, thus activating catabolism of cholesterol in the liver, which results in cholesterol being more intensively transformed into bile salts. It lowers the level of low-density lipoproteins in the plasma and very low-density lipoproteins in fatty tissue. It is recommended for treating hyperlipoproteinemia.Purification Methods
Recrystallise D-thyroxine from H2O (needles) or from an ammonical solution by dilution with H2O, MeOH or Me2CO. It has also been purified by dissolving ~6.5 g in a mixture of MeOH (200mL) and 2N HCl (20mL), adding charcoal, filtering then adding NaOAc solution to pH 6. On standing the thyroxine separates, it is filtered off, washed with MeOH then Me2CO and dried in vacuo. N-Formyl-D-thyroxine has m 210o and [] 21 -26.9o (c 5, EtOH). (±)-Thyroxine has m 256o and is purified in the same way. [Nahm & Siedel Chem Ber 96 1 1963, Salter Biochem J 24 471 1930, Beilstein 14 I 671, 14 II 384, 14 III 1566, 14 IV 2374.]D-Thyroxine 준비 용품 및 원자재
원자재
준비 용품
D-Thyroxine 공급 업체
글로벌( 112)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 |
sales@alchempharmtech.com | United States | 63711 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 |
sales@conier.com | China | 47465 | 58 |
| career henan chemical co | +86-0371-86658258 15093356674; |
factory@coreychem.com | China | 29826 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354 +1-00000000000 |
marketing@targetmol.com | United States | 19892 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | 0551-65418671 |
sales@tnjchem.com | China | 34572 | 58 |
| Dideu Industries Group Limited | +86-29-89586680 +86-15129568250 |
1026@dideu.com | China | 29322 | 58 |
| sgtlifesciences pvt ltd | +8617013299288 |
dj@sgtlifesciences.com | China | 12382 | 58 |
| Alfa Chemistry | +1-5166625404 |
Info@alfa-chemistry.com | United States | 21317 | 58 |
| Chengdu Youngshe Chemical Co., Ltd. | +8618108235634 |
Cecilia@youngshechem.com | China | 2345 | 58 |