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1628-53-1

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1628-53-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1628-53-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,2 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1628-53:
(6*1)+(5*6)+(4*2)+(3*8)+(2*5)+(1*3)=81
81 % 10 = 1
So 1628-53-1 is a valid CAS Registry Number.

1628-53-1Relevant articles and documents

Facile synthesis of 2-azaazulenes from thiobenzoyl isocyanates using trimethylsilyldiazomethane

Morita, Mikio,Hari, Yoshiyuki,Iguchi, Tomoe,Aoyama, Toyohiko

, p. 1753 - 1758 (2008/09/17)

The reaction of trimethylsilyldiazomethane with thiobenzoyl isocyanates, in situ generated from thiazole-4,5-diones, yielded diazoketones, which were converted into 2-azaazulenes by the intramolecular Buchner reaction.

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