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Norethisterone Impurity B

19-Nor-4-androstene-3,17-dione

CAS: 734-32-7

Molecular Formula: C18H24O2

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Norethisterone Impurity B - Names and Identifiers

Name 19-Nor-4-androstene-3,17-dione
Synonyms Estrenone
Norandrostenedione
Nor-Androstenedione
19-NORANDROSTENDIONE
estr-4-ene-3,17-dione
19-NORANDROSTENEDIONE
19-NOR-4-ANDROSTENEDIONE
Norethisterone Impurity B
19-NORANDROSTENE-3,17-DIONE
19-Nor-4-androstene-3,17-dione
19-NORANDROST-4-ENE-3,17-DIONE
(8xi,9xi,10xi,14xi)-estr-4-ene-3,17-dione
(8R,9S,10R,13S,14S)-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione
(8R,9S,10R,13S,14S)-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-quinone
(8R,9S,10R,13S,14S)-13-methyl-7,8,9,10,11,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17(2H,6H)-dione*
CAS 734-32-7
EINECS 211-995-8
InChI InChI=1/C18H24O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h10,13-16H,2-9H2,1H3/t13?,14?,15?,16?,18-/m0/s1

Norethisterone Impurity B - Physico-chemical Properties

Molecular FormulaC18H24O2
Molar Mass272.38
Density1.13±0.1 g/cm3(Predicted)
Melting Point169-172°C
Boling Point433.4±45.0 °C(Predicted)
Specific Rotation(α)+134～+143°(D/25℃)(c=0.5,C2H5OH)
Flash Point161.831°C
Water Solubility191mg/L at 20℃
Vapor Presure0.001Pa at 25℃
Storage ConditionRefrigerator
Refractive Index1.556
Physical and Chemical PropertiesPlate-like crystals (acetone/hexane). Melting point 33-174 °c,[α]25/D 139.5 °(C 0.95, chloroform). There are a variety of isomers. Type 9β: CAS accession number [6827-75-4], Crystal (ethanol/hexane), melting point 174-176 ℃; Type 9β: 10α: CAS accession number [2645-92-3], needle Crystal (acetone/diisopropyl ether), melting point 135 ℃,[α]25/D-23.9 °(C1.055, chloroform); Type 10α: CAS accession number [5696-23-1], crystalline (ethanol/hexane), melting point 164 ℃; Type 13α: CAS accession number [17131-67-8], crystalline (methanol), melting point 160-162 ℃,[α] D-45 ° (chloroform);8 α,9 β,10 α,14 β type: CAS accession number [17131-68-9], crystalline (ethanol), melting point 160-161 °c,[α] D 44 ° (chloroform),(13α)-enantiomer;(±)-Type: CAS accession number [5972-59-8], Crystal (methanol solution), melting point 157-159.5 °c;(±)-9β,10α type: CAS accession number [5972-65-6], prism Crystal (dichloromethane/ether), melting point 150-152 ℃,159-162 ℃ (Double melting point).

Norethisterone Impurity B - Risk and Safety

Risk CodesR11 - Highly Flammable
R34 - Causes burns
Safety DescriptionS16 - Keep away from sources of ignition.
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
WGK Germany3
HS Code29372900

Norethisterone Impurity B - Reference Information

LogP2.18 at 25℃
Use an intermediate of norethisterone, testosterone propionate, and nolone phenylpropionate.
production method The androstin-4-en-19-methanol -3, the 17-Dione is oxidized by chromic anhydride-concentrated sulfuric acid to produce thien-4-en-19-carboxy -3,17-Dione, the latter was decarboxylated by heating in pyridine under nitrogen.
Last Update：2024-04-09 15:16:52
Norethisterone Impurity B
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SKYRUN INDUSTRIAL CO.,LTD
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Hefei TNJ Chemical Industry Co.,Ltd.
Product Name: 19-Nor-4-androstene-3,17-dione Request for quotation
CAS: 734-32-7
Tel: 0086-551-65418684
Email: sales@tnjchem.com
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Shanghai Worldyang Chemical Co.,Ltd.
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Mobile: +86-13651600618
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Product Name: Norandrostenedione Request for quotation
CAS: 734-32-7
Tel: 0576-87821302
Email: yashon313@gmail.com
Mobile: 15168672352
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View History
Norethisterone Impurity B
Sodium Carbonate Monohydrate
Caprylic triglyceride
Ferrate(3-), tris(oxalato)-, triammonium
Ammonium, tetraethyl-, nitrate
4-[(4,6-Dimethylpyrimidin-2-Yl)Thio]Aniline
(S) 1-BOC-3-hydroxylpyrrolidine
POLY(ETHYLENE SUCCINATE)
丙纶油剂
异辛酯
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