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158946-12-4

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158946-12-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158946-12-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,9,4 and 6 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 158946-12:
(8*1)+(7*5)+(6*8)+(5*9)+(4*4)+(3*6)+(2*1)+(1*2)=174
174 % 10 = 4
So 158946-12-4 is a valid CAS Registry Number.

158946-12-4Relevant articles and documents

Synthesis of 3-trialkylsilyl pyrazoles from β-oxo acylsilanes

Gerard,Plantier-Royon,Nuzillard,Portella

, p. 9791 - 9795 (2007/10/03)

The synthesis of β-oxo acylsilanes via cyclic sulfates is described and applied to carbohydrates. These compounds are used for the synthesis of new silylated pyrazoles linked to a carbohydrate moiety by the addition of hydrazines. The regiochemistry of the reaction was determined by NMR analyses (1H/13C and 1H/15N correlations). (C) 2000 Elsevier Science Ltd.

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