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20099-32-5

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20099-32-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20099-32-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,9 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20099-32:
(7*2)+(6*0)+(5*0)+(4*9)+(3*9)+(2*3)+(1*2)=85
85 % 10 = 5
So 20099-32-5 is a valid CAS Registry Number.

20099-32-5Relevant articles and documents

A Novel and Practical Synthetic Method of 3(2H)-Furanone Derivatives

Sakai, Takashi,Yamawaki, Akitoshi,Ito, Hiroshi,Utaka, Masanori,Takeda, Akira

, p. 1199 - 1201 (2007/10/02)

A novel convenient synthetic method of 5-aryl-2,2-dimethyl-3(2H)-furanones (aryl = C6H5, 2-CH3C6H4, 3-CH3C6H4, 4-CH3C6H4, 2-ClC6H4, 4-ClC6H4, 2,4-Cl2C6H3) is described.It involves the Claisen-Schmidt condensation (potassium hydroxide/ethanol) of aromatic

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