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90521-77-0

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90521-77-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90521-77-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,2 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90521-77:
(7*9)+(6*0)+(5*5)+(4*2)+(3*1)+(2*7)+(1*7)=120
120 % 10 = 0
So 90521-77-0 is a valid CAS Registry Number.

90521-77-0Relevant articles and documents

Antitumor Imidazotetrazines. 14. Synthesis and Antitumor Activity of 6- and 8-Ssubstituted Imidazo-1,2,3,5-tetrazinones and 8-Substituted Pyrazolo-1,2,3,5-tetrazinones

Lunt, Edward,Newton, Christopher G.,Smith, Christopher,Stevens, Graham P.,Stevens, Malcolm F. G.,et al.

, p. 357 - 366 (2007/10/02)

The systematic variation of the potent antitumor agent mitozolomide (1) is extended to cover alteration of substituents at position 6 and 8 and to change the imidazo-1,2,3,5-tetrazinone (6) skeleton to the isomeric pyrazolo-1,2,3,5-tetrazino

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