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Dexamethasone EP Impurity E

CAS No.
13209-41-1
Chemical Name:
Dexamethasone EP Impurity E
Synonyms
(16alpha)-17,21-dihydroxy-16-methylpregna-1,4,9(11)-triene-3,20-dione;VBP15;Dexamethasone EP Imp E;Dexamethasone impurity E;Dexamethasone Impurity L;Carbamazepine Impurity 22;Vamorolone, 10 mM in DMSO;(8S,10S,13S,14S,16R,17R)-17-hydroxy;16α-Methyl-9,11-dehydro Prednisolone;Tobramycin and dexamethasone impurity C
CBNumber:
CB1921384
Molecular Formula:
C22H28O4
Molecular Weight:
356.46
MDL Number:
MFCD18452727
MOL File:
13209-41-1.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-27 17:00:41

Dexamethasone EP Impurity E Properties

Melting point 228-231 °C(Solv: acetone (67-64-1); hexane (110-54-3))
Boiling point 548.3±50.0 °C(Predicted)
Density 1.24±0.1 g/cm3(Predicted)
storage temp. Refrigerator
solubility Chloroform (Slightly), Dioxane (Slightly), Ethyl Acetate (Slightly)
form Solid
pka 12.53±0.70(Predicted)
color Pale Yellow
InChIKey ZYTXTXAMMDTYDQ-JBFVNPOPNA-N
SMILES C1(=O)C=C2[C@](C)(C=C1)C1[C@]([H])([C@@]3([H])[C@@](CC=1)(C)[C@@](O)(C(=O)CO)[C@H](C)C3)CC2 |&1:4,9,11,13,17,23,r|
FDA UNII 8XP29XMB43
UNSPSC Code 12352200
NACRES NA.84

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H317-H319
Precautionary statements  P261-P264-P272-P280-P302+P352-P305+P351+P338
WGK Germany  WGK 3
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Sens. 1

Dexamethasone EP Impurity E price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth FM25760 16a-Methyl-9,11-dehydro prednisolone 13209-41-1 25mg $290.75 2026-06-04 Buy
Biosynth FM25760 16a-Methyl-9,11-dehydro prednisolone 13209-41-1 50mg $484 2026-06-04 Buy
Biosynth FM25760 16a-Methyl-9,11-dehydro prednisolone 13209-41-1 100mg $808 2026-06-04 Buy
Biosynth FM25760 16a-Methyl-9,11-dehydro prednisolone 13209-41-1 250mg $1682.5 2026-06-04 Buy
Biosynth BM300100 16a-Methyl-9,11-dehydro prednisolone - Bio-X ™ 13209-41-1 10mg $199.4 2026-06-04 Buy
Product number Packaging Price Buy
FM25760 25mg $290.75 Buy
FM25760 50mg $484 Buy
FM25760 100mg $808 Buy
FM25760 250mg $1682.5 Buy
BM300100 10mg $199.4 Buy

Dexamethasone EP Impurity E Chemical Properties,Uses,Production

Uses

A related intermediate of Prednisolone (P703740).

Biological Activity

Vamorolone, a synthetic steroid, is an orally available dissociative steroid with anti-inflammatory efficacy. It is a partial agonist of the glucocorticoid receptor (NR3C1) th at appear to be safe and well tolerated. Also, vamorolone is a potent antagonist of the mineralocorticoid receptor (NR3C2). It is under development for children with Duchenne muscular dystrophy.

in vivo

Vamorolone (5-30 mg/kg; cherry syrup) shows a superior side effect profile compared to pharmacological glucocorticoids in mdx mice[1].
Vamorolone (30 mg/kg; orally; daily for 20 days) reduces CNS Inflammation in murine experimental autoimmune encephalomyelitis[2].

Animal Model:C57BL/6 mice (experimental autoimmune encephalomyelitis)[2]
Dosage:30 mg/kg
Administration:Orally; daily for 20 days (starting one day prior to MOG 33-55 peptide immunization and continuing)
Result:Reduced CNS inflammation in murine experimental autoimmune encephalomyelitis.

Toxics Screening Level

The ITSL for 17, 21-dihydroxy-16 alpha-methylpregna-1,4,9 (11)-triene-3, 20-dione has been changed from 0.04 μg/m3 to 0.1 μg/m3 based on annual averaging time.

Dexamethasone EP Impurity E Preparation Products And Raw materials

Global( 104)Suppliers
Supplier Tel Email Country ProdList Advantage
Beyond Pharmaceutical Co., Ltd 0571-81953185 +86-15381198709 jasonyao@bydpharma.com China 852 60
Jinan Cen Ben Medical Technology Co., Ltd 14793566 info@cenpharm.com China 785 58
LangFangshi Zekang Pharma Tech CO.,Itd. 0316-2883536 19333636468 93618484@qq.com China 2818 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Chemsky(shanghai)International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
ShangHai Caerulum Pharma Discovery Co., Ltd. 18149758185 18149758185 sales-cpd@caerulumpharma.com China 3493 58
Quality Control Solutions Ltd. 0755-66853366 13670046396 orders@qcsrm.com China 18188 56
Shandong Boluoda Biological Technology Co., Ltd. 0531-68651502 2310993908@qq.com China 3157 58
Nanjing XiZe Biotechnology CO., Ltd. 025-66023220 15250997978 1511893459@qq.com China 4777 55
Shanghai eliv pharmaceutical Co.,Ltd. 021-50158063 sales@elivpharma.com China 480 58

View Lastest Price from Dexamethasone EP Impurity E manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Vamorolone pictures 2026-07-27 Vamorolone
13209-41-1
$31.00-72.00 99.57% 10g TargetMol Chemicals Inc.
Dexamethasone EP Impurity E pictures 2026-03-12 Dexamethasone EP Impurity E
13209-41-1
10mg 0.98 10g ShenZhen H&D Pharmaceutical Technology Co., LTD
  • Vamorolone pictures
  • Vamorolone
    13209-41-1
  • $31.00-72.00
  • 99.57%
  • TargetMol Chemicals Inc.

Dexamethasone EP Impurity E Spectrum

17,21-dihydroxy-16alpha-methylpregna-1,4,9(11)-triene-3,20-dione 16α-Methyl-9,11-dehydro Prednisolone Dexamethasone impurity E Dexamethasone Impurity 5(Dexamethasone EP Impurity E) (16α)-17,21-Dihydroxy-16-Methylpregna-1,4,9(11)-triene-3,20-dione 17.alpha.,21-Dihydroxy-16.alpha.-methylpregna-1,4,9(11)-triene-3,20-dione Dexamethasone Impurity L (8S,10S,13S,14S,16R,17R)-17-hydroxy Dexamethasone EP Imp E (8S,10S,13S,14S,16R,17R)-17-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-3-one ((2R,3R,4aS,4bS,10aS,10bR,11S,12aS)-10b-fluoro-2,11-dihydroxy-3,10a,12a-trimethyl-1,8-dioxo-1,2,3,4,4a,4b,5,6,8,10a,10b,11,12,12a-tetradecahydrochrysen-2-yl)methyl dihydrogen phosphate 17, 21-dihydroxy-16α-methylpregna- 1, 4, 9(11)-triene-3,20-dione ethyl (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate VBP15 inhibit,repair,Mineralocorticoid Receptor,VBP 15,Glucocorticoid Receptor,NF-κB,inflammation,Duchenne,Inhibitor,membrane,dystrophy,Vamorolone,Nuclear factor-κB,Nuclear factor-kappaB,muscular,VBP-15,glucocorticoid Pregna-1,4,9(11)-triene-3,20-dione, 17,21-dihydroxy-16-methyl-, (16α)- Tobramycin and dexamethasone impurity C Carbamazepine Impurity 22 Vamorolone, 10 mM in DMSO 16a-Methyl-9,11-dehydro prednisolone - Bio-X ? 16Alpha-Methyl-9,11-dehydro Prednisolone (16alpha)-17,21-dihydroxy-16-methylpregna-1,4,9(11)-triene-3,20-dione (8S,10S,13S,14S,16R,17R)-17-Hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-3-one (Dexamethasone impurity) 13209-41-1 Intermediates & Fine Chemicals Pharmaceuticals Steroids API