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77373-55-8

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77373-55-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77373-55-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,7 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77373-55:
(7*7)+(6*7)+(5*3)+(4*7)+(3*3)+(2*5)+(1*5)=158
158 % 10 = 8
So 77373-55-8 is a valid CAS Registry Number.

77373-55-8Downstream Products

77373-55-8Relevant articles and documents

Synthesis & Reaction of Indole-1,2-dicarboxaldehydes with Hydrazine & Hydroxylamine

Hiremath, Shivayogi P.,Thakar, Shreeram B.,Purohit, Muralidhar G.

, p. 770 - 774 (2007/10/02)

Indole-1,2-dicarboxaldehydes (2a-g) have been prepared by formylation of 3-methylindole-2-carboxaldehydes (1a-g) with DMF-POCl3 at 140 deg C. 2a-e react with N2H4.H2O to give hydrazones (3a-e and 3g) of 1-formylindole-2-carboxaldehydes instead of the tria

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