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87899-18-1

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87899-18-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87899-18-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,9 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 87899-18:
(7*8)+(6*7)+(5*8)+(4*9)+(3*9)+(2*1)+(1*8)=211
211 % 10 = 1
So 87899-18-1 is a valid CAS Registry Number.

87899-18-1Relevant articles and documents

SILYL NITRONATES IN ORGANIC SYNTHESIS. SYNTHESIS OF 3(2H)-FURANONES

Andersen, Soeren H.,Sharma, K. K.,Torssell, Kurt, B. G.

, p. 2241 - 2246 (1983)

A synthesis of 3(2H)-furanones, a structural element of several natural products, has been developed in which silyl nitronates or nitrile oxides are condensed with vinyl ketones to form 5-acyl-2-isoxazolines which are reduced with titanous ions or catalytically to 1,4-diketo-2-ols and cyclized with sodium acetate in acetic acid.

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