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81857-24-1

81857-24-1

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81857-24-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81857-24-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,5 and 7 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81857-24:
(7*8)+(6*1)+(5*8)+(4*5)+(3*7)+(2*2)+(1*4)=151
151 % 10 = 1
So 81857-24-1 is a valid CAS Registry Number.

81857-24-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name methyl 3α,7β-dihydroxy-12-oxocholanate tosylhydrazone

1.2 Other means of identification

Product number -
Other names -

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:81857-24-1 SDS

81857-24-1Relevant articles and documents

Potential Bile Acid Metabolites. 6. Stereoisomeric 3,7-Dihydroxy-5β-cholanic Acids

Iida, Takashi,Chang, Frederic C.

, p. 2966 - 2972 (2007/10/02)

New synthetic routes to the four possible 3,7-dihydroxy acids are described.The principal reactions involved were inversions with DMF and Me2SO-crown ether and reduction of 12-oxo tosylhydrazones.Inversion of 3α-tosylates by the Me2SO-crown ether method succeeded but that of the corresponding mesylates did not.A table of 1H NMR chemical shift reference data of monosubstituted methyl cholanates pertinent to bile acid characterization has been expanded.

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