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183-10-8

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183-10-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 183-10-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,8 and 3 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 183-10:
(5*1)+(4*8)+(3*3)+(2*1)+(1*0)=48
48 % 10 = 8
So 183-10-8 is a valid CAS Registry Number.

183-10-8Downstream Products

183-10-8Relevant articles and documents

A Facile, Selective Preparation of Monoketals from Pentaerythritol and Ketones

Murguia, Marcelo C.,Vaillard, Santiago E.,Grau, Ricardo J.

, p. 1093 - 1097 (2001)

The selective preparation of monoketals 3a-f from pentaerythritol 1 and cyclic, acyclic, aromatic, and aliphatic ketones 2a-f was achieved by a facile method. The extreme polarity and low solubility of pentaerythritol in almost all organic solvents were the main difficulties to be overcome for the preparation of monoketals in good yields and high selectivity. A benzene-dimethylformamide (40:60) mixture proved to be excellent for the ketalization. The one-step procedure developed allowed the preparation of monoketals in good yields and good to excellent selectivity (higher than 90 percent).

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