成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

ChemicalBook--->CAS DataBase List--->42890-76-6

42890-76-6

42890-76-6 Structure

42890-76-6 Structure
IdentificationMore
[Name]

(S)-1,2,4-Butanetriol
[CAS]

42890-76-6
[Synonyms]

1,2,4-BUTANETRIOL, (S)
(2S)-BUTANE-1,2,4-TRIOL
(S)-(-)-1,2,4-BUTANETRIOL
(S)-1,2,4-BUTANETRIOL
(S)-(-)-1,2,4-TRIHYDROXYBUTANE
BUTANETRIOL(CAS#: 42890-76-6),INT STD#1&
(S)-()-1,2,4-Butanetriol 98%
(S)-(-)-1,2,4-Butanetriol(ee/glc)
(S)-1,2,4-Butanetriol, 99% ee, 95%
biodiesel impurity
butanetriol internal standard #1
(S)-(-)-1,2,4-BUTANETRIOL EE 99%
(S)-(-)-1,2,4-BUTANETRIOL, 96%, EE 99+%
(S)-1,3,4-BUTANETRIOL
ASTM(R) D6584 Individual Standard Solution & Internal Standards Kit
ASTM(R) D6584 Standard Solution 5
EN 14105:2003 Standard Solution Kit
EN 14105:2003 Standard Solution 1
ASTM(R) D6584 Standard Solution 2
ASTM(R) D6584 Individual Stock and Internal Standards Mix Kit
[EINECS(EC#)]

610-080-4
[Molecular Formula]

C4H10O3
[MDL Number]

MFCD00063213
[Molecular Weight]

106.12
[MOL File]

42890-76-6.mol
Chemical PropertiesBack Directory
[Appearance]

clear colorless viscous liquid
[alpha ]

-30 º (c=1, MeOH)
[Boiling point ]

150 °C0.04 mm Hg(lit.)
[density ]

1.19 g/mL at 25 °C(lit.)
[refractive index ]

n20/D 1.475(lit.)
[Fp ]

>110°C
[storage temp. ]

2-8°C
[solubility ]

Chloroform (Slightly), Methanol (Sparingly), Water (Slightly)
[form ]

Oil
[pka]

14.02±0.20(Predicted)
[color ]

Colourless
[Specific Gravity]

1.190
[optical activity]

[α]19/D 28±2, c = 1 in methanol
[Water Solubility ]

soluble
[Sensitive ]

Hygroscopic
[BRN ]

1719408
[Stability:]

Hygroscopic
[CAS DataBase Reference]

42890-76-6(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

F,Xn
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
R41:Risk of serious damage to eyes.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable.
[Safety Statements ]

S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes .
S39:Wear eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S16:Keep away from sources of ignition-No smoking .
S36/37:Wear suitable protective clothing and gloves .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S33:Take precautionary measures against static discharges .
S29:Do not empty into drains .
S9:Keep container in a well-ventilated place .
[RIDADR ]

UN 3316 9/PG 2
[WGK Germany ]

3
[F ]

3-10-21
[HS Code ]

2905490090
Questions And AnswerBack Directory
[Description]

(S)-(-)-1,2,4-Butanetriol can be prepared via reduction of (S)-malic acid in the presence of borane-dimethyl sulfide. (S)-(-)-1,2,4-Butanetriol may be used as a starting material in the enantioselective total syntheses of (+)-azimine and (+)-carpaine. It can also be used to prepare the organic building blocks (+)-3,4-epoxy-1-butanol, (2S,4S)-4-(hydroxymethyl)-2-ferrocenyl-1,3-dioxan, (S)-1,2,4-triacetoxybutane via acetylation with acetic anhydride, and (S)-1,2,4-tris-(3,5-dinitrobenzoy1oxy)butane via esterification with 3,5-dinitrobenzoyl chloride, and so on.

Hazard InformationBack Directory
[Chemical Properties]

clear colorless viscous liquid
[Uses]

Glycerophospholipids act as regulators of various enzyme activities, and can be used as biological markers to indicate pathological states.
[Definition]

ChEBI: 2-deoxyerythritol is a secondary alcohol.
[Biological Activity]

The DC-Chol/DOPE blend is widely useful in liposome preparation as it influences the process of encapsulation. 1:2 or 3:2 is a preferred molar ratio for DC-Chol/DOPE liposomes.
Spectrum DetailBack Directory
[Spectrum Detail]

(S)-1,2,4-Butanetriol(42890-76-6)1HNMR
(S)-1,2,4-Butanetriol(42890-76-6)Raman
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

(S)-(-)-1,2,4-Butanetriol, 96%, ee 99+%(42890-76-6)
[Sigma Aldrich]

42890-76-6(sigmaaldrich)
42890-76-6 suppliers list
Company Name: Shaanxi Dideu Medichem Co. Ltd
Tel: +86-29-81139210 +86-18192627656 , +86-18192627656
Website: m.is0513.com/manufacturer/shaanxi-dideu-medichem-219/
Company Name: Shanghai UCHEM Inc.
Tel: +862156762820 +86-13564624040 , +86-13564624040
Website: http://www.myuchem.com/
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512 , +86-19937530512
Website: https://www.tianfuchem.com/
Company Name: career henan chemical co
Tel: +86-0371-86658258 +8613203830695 , +8613203830695
Website: www.coreychem.com/
Company Name: Jinan Carbotang Biotech Co.,Ltd.
Tel: +8615866703830 , +8615866703830
Website: http://m.is0513.com/ShowSupplierProductsList31189/0.htm
Company Name: Chongqing Chemdad Co., Ltd
Tel: +86-023-6139-8061 +86-86-13650506873 , +86-86-13650506873
Website: http://www.chemdad.com/
Company Name: Alchem Pharmtech,Inc.
Tel: 8485655694
Website: m.is0513.com/ShowSupplierProductsList454175/0.htm
Company Name: CONIER CHEM AND PHARMA LIMITED
Tel: +8618523575427 , +8618523575427
Website: http://www.conier.com/
Company Name: Jinan Liheng Biotechnology Co., Ltd.
Tel: 15865262812
Website: m.is0513.com/ShowSupplierProductsList1320706/0.htm
Company Name: Univar Solutions(China) Co., Ltd.
Tel: +8615902132654 , +8615902132654
Website: http://m.is0513.com/manufacturer/univar-solutionschina-249/
Company Name: SIMAGCHEM CORP
Tel: +86-13806087780 , +86-13806087780
Website: http://www.simagchem.com/
Company Name: Hubei Ipure Biology Co., Ltd
Tel: +8613367258412 , +8613367258412
Website: www.ipurechemical.com
Company Name: Shanghai Yudiao Chemistry Technology Co.,Ltd
Tel: 02137285211 18964703211 , 18964703211
Website: www.yudiaochem.com
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: +86-0551-65418671 +8618949823763 , +8618949823763
Website: www.tnjchem.com
Company Name: Baoji Guokang Healthchem co.,ltd
Tel: +8615604608665 15604608665 , 15604608665
Website: www.gk-bio.com
Company Name: Dayang Chem (Hangzhou) Co.,Ltd.
Tel: 571-88938639 +8617705817739 , +8617705817739
Website: https://www.dycnchem.com/
Company Name: Changzhou Guiding Bio-Tech. Co.,Ltd.
Tel: +86-519-519-86686860 +8618795626222 , +8618795626222
Website: www.guiding-bio.com
Company Name: changzhou huayang technology co., ltd
Tel: +8615250961469 , +8615250961469
Website: http://www.huayangchem.com/template/eabout.html
Tags:42890-76-6 Related Product Information
1941-52-2 526-95-4 6153-64-6 327-97-9 526-99-8 147-71-7 488-84-6 1707-77-3 3068-00-6 77-95-2 33993-25-8 42890-76-6

  • HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase | Privacy | Terms | About Us
  • All products displayed on this website are only for non-medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.
    According to relevant laws and regulations and the regulations of this website, units or individuals who purchase hazardous materials should obtain valid qualifications and qualification conditions.
  • Copyright © 2023 ChemicalBook All rights reserved.