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208588-17-4

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208588-17-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 208588-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,5,8 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 208588-17:
(8*2)+(7*0)+(6*8)+(5*5)+(4*8)+(3*8)+(2*1)+(1*7)=154
154 % 10 = 4
So 208588-17-4 is a valid CAS Registry Number.

208588-17-4Relevant articles and documents

Acid-Catalyzed Condensations of Ninhydrin with Aromatic Compounds. Preparation of 2,2-Diaryl-1,3-indanediones and 3-(Diarylmethylene)isobenzofuranones 1

Klumpp, Douglas A.,Fredrick, Shyla,Lau, Siufu,Jin, Kevin K.,Bau, Robert,Surya Prakash,Olah, George A.

, p. 5152 - 5155 (2007/10/03)

Ninhydrin (1) reacts with aromatic compounds in acid solution to give condensation products. In H2SO4, 1 reacts with arenes to give 2,2-diaryl-1,3-indanediones (2a-f). In superacidic triflic acid (CF3SO3H, TfOH)

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