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56639-16-8

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56639-16-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56639-16-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,6,3 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 56639-16:
(7*5)+(6*6)+(5*6)+(4*3)+(3*9)+(2*1)+(1*6)=148
148 % 10 = 8
So 56639-16-8 is a valid CAS Registry Number.

56639-16-8Relevant articles and documents

Some 3-arylimino-5(isopropylidene hydrazono-N)-1,2,4-dithiazolidines : Oxidative Debenzylation of 1-(isopropylideneamino)-5-aryl-2-S-benzyliso-4-thiobiurets

Srivastava, P. K.,Rai, S. K.,Verma, V. K.

, p. 1125 - 1128 (2007/10/02)

The synthesis of 3-arylimino-5-(isopropylidenehydrazono-N)-1,2,4-dithiazolidines has been described by the oxidative debenzylation of the corresponding 1-(isopropylideneamino)-5-aryl-2-S-benzyliso-4-thiobiurets.These compounds have been characterized by the direct oxidation of the corresponding 2,4-dithiobiurets and also by i.r. spectra.

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