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26341-55-9

26341-55-9

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26341-55-9 Usage

Chemical Properties

White Solid

Uses

Protected Prednisone (P703780). Adrenocortical steroid.

Check Digit Verification of cas no

The CAS Registry Mumber 26341-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,3,4 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 26341-55:
(7*2)+(6*6)+(5*3)+(4*4)+(3*1)+(2*5)+(1*5)=99
99 % 10 = 9
So 26341-55-9 is a valid CAS Registry Number.

26341-55-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 17,20:20,21-Bis[methylenebis(oxy)]-pregna-1,4-diene-3,11-dione

1.2 Other means of identification

Product number -
Other names 17,20:20,21-Bis(methylenedioxy)pregna-1,4-diene-3,11-dione(Mixture of Diastereomers)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:26341-55-9 SDS

26341-55-9Relevant articles and documents

Total Synthesis of Cortisol: Application to Selective Deuteriation at C-1 and C-19

Minagawa, Kazuo,Furuta, Takashi,Kasuya, Yasuji,Fujino, Akiharu,Avery, Mitchell A.,Tanabe, Masato

, p. 587 - 592 (2007/10/02)

An 11-step total synthesis of cortisol and its application to selective deuteriation at the 19-methyl and the C-1 positions is described.The dihydroxy acetone group at C-17 of prednisone (3) was protected as the bismethylenedioxy derivative (4) and degraded to the ring C/D fragment, oxoindanylpropionic acid (2), by Birch reduction followed by ozonolysis.The reaction of deuterioisopropenyl anion with compound (2) followed by dehydration, cyclisation, and osonolysis produced -4,5-seco-17α,20;20,21-bismethylenedioxypregnane-3,5,11-trione .Cyclisation of (16a) in KOH-MeOH affordedthe bismethylenedioxy cortisone (17), wich upon reduction with KBH4 gave the desired (2)H5 cortisol (19).

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