Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.Our main business covers the fields below:

1.Noble Metal Catalysts (Pt.Pd...)
2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...)
3.OLED intermediates (Fluorene,Carbazole,Boric acid...)
4.Customs Synthesis

Our advantage:

1. Higest quality and good package 
2.Fast delivery 
3.Better payment term 
4.Fast response to customer within 6 hours 
5.Good business credit in Europe ,US ,Japan ,Korea 

Anyway ,if you need any chemicals from China ,Henan Tianfu can help you 

Identification of 28439-51-2

Name:

5a-Pregnane-3,20-dione, 5,11a-dihydroxy-6b-methyl- (6CI,8CI) (Related Reference)

Molecular Formula:

C22H34 O4

CAS Registry Number:

28439-51-2

Synonyms:

NSC17258; U 7890

InChI:

InChI=1/C22H34O4/c1-12-9-15-17-6-5-16(13(2)23)20(17,3)11-18(25)19(15)21(4)8-7-14(24)10-22(12,21)26/h12,15-19,25-26H,5-11H2,1-4H3/t12-,15+,16-,17+,18-,19-,20-,21-,22+/m1/s1

Molecular Structure:

Chemical Properties

Molecular Weight:

362.503

Density:

1.167g/cm³

Boiling Point:

506.5°C at 760 mmHg

Flash Point:

274.2°C

Refractive index:

1.549