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38521-84-5

38521-84-5

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  • First-aid measures: General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

  • Fire-fighting measures: Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

  • Exposure controls/personal protection:Occupational Exposure limit valuesBiological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

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Relevant articles and documentsAll total 4 Articles be found

A practical solution for aqueous reactions of water-insoluble high-melting-point organic substrates

Cui, Xiaoxue,Li, Bo,Liu, Tianzhen,Li, Chunbao

supporting information; experimental part, p. 668 - 672 (2012/06/01)

A practical solution to the problem of performing aqueous reactions for very sparingly soluble high-melting-point (VSSHMP) organic substrates has been developed, which entails mechanically stirring a mixture of the substrate, the corresponding reagent(s), water, catalytic Aliquat 336 and sand. When the melting points of the substrates which include steroids, ketones, aldehydes, aromatics and alkaloids are around 200 °C, the reactions can be performed at 20 °C. The substrate solubility can be as low as 1 × 10-10 mol L-1. The Royal Society of Chemistry 2012.

Chloro- or bromo-trimethylsilane induced rapid and quantitative acid-ester conversion for steroid based alcohols with various carboxylic acids under solvent free conditions

Goswami, Papori,Hazarika, Saroj,Borah, Parinita,Chowdhury, Pritish

, p. 678 - 682 (2007/10/03)

Steroid based higher alcohols are rapidly esterified in quantitative yield with a number of carboxylic acids in the presence of TMSCl or TMSBr generally under solvent free conditions.

Ceric ammonium nitrate (CAN) - A useful catalyst for the rapid and high-yield esterification of carboxylic acids and alcohols with special reference to steroid and other multi-functional natural products

Goswami,Chowdhury

, p. 955 - 957 (2007/10/03)

Ceric ammonium nitrate (CAN) acts as a versatile catalyst for the esterification of carboxylic acids and alcohols, including steroids and other multi-functional natural products, in excellent yields under mild and convenient reaction conditions.

Improved degradation of N-nitrososolasodine to pregnane derivatives

Bakker,Vrijhof

, p. 4699 - 4702 (2007/10/11)

-

Process route upstream and downstream products

Process route

3β-Hydroxy-Δ<sup>5.16</sup>-pregnadienon-(20)
1162-53-4,104010-41-5

3β-Hydroxy-Δ5.16-pregnadienon-(20)

acetic acid
64-19-7,77671-22-8

acetic acid

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With chloro-trimethyl-silane; at 20 ℃;
98%
ammonium cerium(IV) nitrate; In chloroform; at 55 - 60 ℃;
98%
C<sub>37</sub>H<sub>50</sub>O<sub>5</sub>

C37H50O5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 5h;
77%
C<sub>31</sub>H<sub>46</sub>O<sub>5</sub>

C31H46O5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 4.5h;
73%
C<sub>36</sub>H<sub>48</sub>O<sub>5</sub>

C36H48O5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 5.5h;
74%
C<sub>35</sub>H<sub>54</sub>O<sub>5</sub>

C35H54O5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 5.5h;
71%
C<sub>36</sub>H<sub>47</sub>ClO<sub>5</sub>

C36H47ClO5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 6h;
73%
C<sub>37</sub>H<sub>50</sub>O<sub>5</sub>

C37H50O5

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 7h;
71%
C<sub>36</sub>H<sub>47</sub>NO<sub>7</sub>

C36H47NO7

3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
With dihydrogen peroxide; sodium acetate; vanadia; Aliquat 336; In water; at 75 ℃; for 10h;
72%
3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
Diosgenin-acetat 1) N-Methylmorpholin*HBr, Isobuttersaeureanhydrid, Δ; 2) Na2Cr2O7*2H2O, AcOH;
aus Alkohol Ia und Ac2O/Py.;
aus Diosgenin;
Solasodin: 1) Ac2O 2) CrO3, Eg.;
Diosgenin: 1) Ac2O 2) CrO3, Eg.;
Solasodin, (CH3CO)2O/Eg.;
Solasodin, CrO3/Eg.;
Alliumosid D, oxidative Spaltung und Acetylierung;
Alliumosid E, oxidative Spaltung und Acetylierung;
Furostandien-3β-ol-acetat VI, CrO3,HOAc;
Episulfid I, C5H5N*HSCN;
Solasodin (I), (CH3CO)2O;
3β-27-Diacetoxy-23-<1-acetoxyaethyliden>-25α-5.20(22)-furostadien, CrO3/ wss. Eg.;
(yield)76percent, aus 26-Acetamino-furosta-5.20(22)-dien-3β-ol-acetat, CrO3, Eg., wenig W. ;
Solasodin/ Toluol+Essigsaeureanhydrid+Triaethylamin <Δ, 3h>, 1) CrO3/ Eg., 2) Δ <45 Min. 160grad>;
Diosgenin, 1) Acetanhydrid ---> Acetat d. Diosgenins, 2) Natriumbichromat/ Eg. <30 Min., 45grad>;
(25S)-3β-Acetoxy-26-acetamino-furosta-5.20(22)-dien, 1) CrO3, 2) Na2SO3 ;
Diosgeninacetat, 1.) Ac2O, wfr. K-acetat, 140-145grad, 40 h, unter N2, 2.) wss. Eg., 90grad, 30 Min., 3.) CrO3, wss. Eg., 20grad, 1 h, 4.) Ac2O, Siedetemp., 3 h, unter N2;
3β-Hydroxy-17α-brom-pregn-5-en-20-on, 1) Li2CO3, LiCl/ DMF, 2) Acetanhydrid/ Py.;
Solasodin I + 1.) Ac2O/Chinolin 2.)CrO3;
23,27-Cyclo-N-acetylamino-5,20(22)-furostadien-3β-ol (IIIa,IIIb), Na2Cr2O7, Eg.;
Oxidation von ASP-I;
Solasodin, 1) Acetanhydrid/ sd. Py., Triaethylamin ---> O,N-Diacetylsolasodin, 2) CrO3, Na-acetat/ wss. Eg., 3) NaH/Toluol <110grad>;
Diosgeninacetat/ Acetanhydrid, 1) wfr. K-Acetat <140-145grad, 40h, unter N2>, 2) wss. Eg. <90grad, 30 Min.>, 3) CrO3/ wss. Eg. <20grad, 1h>, 4) Toluol, NH3-Gas od. Ionenaustauscher;
Isonarthogenin-diacetat, 1) Py.-HCl/ Acetanhydrid , 2) Eg., W., CrO3, 3) wss. Formaldehyd, Na-Acetat ;
3β-Acetoxy-16α.17α-epoxy-pregnen-(5)-on-(20), 1) Cr(II)-acetat/ wss. Eg. , 2) Acetylier. m. (CH3-CO)2O;
Solasodin-N,O-diacetat;
Diosgenin, 1) Acetanhydrid , 2) CrO3, Natriumacetat/ wss. Eg., 3) NaH/Toluol <110grad>;
3β.16β-Diacetoxy-20--pregnen-(5), CrO3, wss. Eg. ;
16-Dehydropregnenolon, 1.2-tert.-Butylorthoacetyl-3.4.6-tri-O-acetyl-α-D-gluco-pyranose, in Ggw. von 2.6-Lutidinperchlorat;
(yield)60percent; aus Solasodin, 1) Acetanhydrid/ Toluol , 2) Na2Cr2O7/ Eg., 3) Na2SO3/ Eg.;
Diosgenin/ Acetanhydrid, 1) Anilinhydrochlorid , 2) wss. Eg., Na-Acetat, 3) Ox. m. CrO3/ 90percentig. Eg. <20grad, 3h>, 4) Hydrolyse;
Aus Diosgenin;
Aus Solasodin;
Aus Solasodin I;
Pseudodiosgenin-diacetat 1) CrO3 2) Acetylierung;
3β-acetoxy-pregna-5,16-dien-20-one
979-02-2,38521-84-5,95720-31-3,122405-61-2

3β-acetoxy-pregna-5,16-dien-20-one

Conditions
Conditions Yield
entspr. Semicarbazon, Titanouschlorid;
Solasodin (1);
(yield);
Solasodin, Ac2O, Na2Cr2O7;
IV;
III, Me, Zn/Eg;
Diosyenin;
techn. Prod., Reinigung;
23-Methyl-3β,26-diacetoxy-furosta-5,20(22)-dien, Na2Cr2O7-Eg.;
23-Ethyl-3β,26-diacetoxy-furosta-5,20(22)-dien, Na2Cr2O7-Eg.;
23-Propyl-3β,26-diacetoxy-furosta-5,20(22)-dien, Na2Cr2O7-Eg.;
Diacetat II;
aus Ψ-Solasodin-O,N-diacetat, Na2Cr2O7;

Global suppliers and manufacturers

Global( 2) Suppliers
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  • Antimex Chemical Limied
  • Business Type:Lab/Research institutions
  • Contact Tel:0086-21-50563169
  • Emails:anthony@antimex.com
  • Main Products:163
  • Country:China (Mainland)
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