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31948-18-2

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31948-18-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31948-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,4 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31948-18:
(7*3)+(6*1)+(5*9)+(4*4)+(3*8)+(2*1)+(1*8)=122
122 % 10 = 2
So 31948-18-2 is a valid CAS Registry Number.

31948-18-2Downstream Products

31948-18-2Relevant articles and documents

'High-surface sodium' as a reducing agent for TiCl 3

Furstner,Seidel

, p. 63 - 68 (2007/10/02)

Sodium deposited on inorganic supports such as Al2O3, TiO2 and NaCl ('high-surface sodium') is a cheap, readily prepared, nonpyrophoric reducing agent for TiCl3. The low-valent titanium thus obtained, after only 1 h reduction time, is well suited for McMurry coupling reactions, particularly of aromatic carbonyl compounds. It exhibits a previously unrivalled template effect for the cyclization of dicarbonyl compounds to (macrocyclic) cycloalkenes and is suitable for the reduction of N-acyl-2-aminobenzophenone derivatives to 2,3-disubstituted indoles. Even a 36-membered ring could be formed without recourse to high dilution techniques.

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