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169305-41-3

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169305-41-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169305-41-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,3,0 and 5 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 169305-41:
(8*1)+(7*6)+(6*9)+(5*3)+(4*0)+(3*5)+(2*4)+(1*1)=143
143 % 10 = 3
So 169305-41-3 is a valid CAS Registry Number.

169305-41-3SDS

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 (5R)-3-Ethynyl-5-hydroxy-2-methyl-2-cyclohexen-1-one

1.2 Other means of identification

Product number -
Other names (R)-3-Ethynyl-5-hydroxy-2-methyl-cyclohex-2-enone

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:169305-41-3 SDS

169305-41-3Relevant articles and documents

Selective acylation of A-ring precursors of vitamin D using enzymes in organic solvents

Fernandez,Ferrero,Gotor,Okamura

, p. 6057 - 6061 (2007/10/03)

Whereas Chromobacterium viscosum lipase (CVL) catalyzes selectively the acylation of the C-5 hydroxyl of the three stereoisomeric vitamin D A-ring precursors 2a, 3a and 3b, only the C-3 hydroxyl of the fourth stereoisomer 2b is acylated under the same conditions in organic solvent. In a convenient application, the racemic vitamin D A-ring precursor 4, possessing only the C-5 hydroxyl, was resolved using suitable conditions identified from the studies of 2 and 3.

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