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257862-98-9

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257862-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 257862-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,8,6 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 257862-98:
(8*2)+(7*5)+(6*7)+(5*8)+(4*6)+(3*2)+(2*9)+(1*8)=189
189 % 10 = 9
So 257862-98-9 is a valid CAS Registry Number.

257862-98-9Relevant articles and documents

Reactions of hydrazonoyl halides 471: Synthesis of some new 2,3-dihydro-1,3,4-thiadiazoles, triazolo[4,3-a]pyrimidines, and pyrazolo[3,4-d]pyridazines with expected biological activity

Zaki, Yasser H.,Ahmed, Sayed A.,Hussein, Ahmed M.,Abdelhamid, Abdou O.

, p. 825 - 837 (2006)

2,3-dihydro-1,3,4-thiadiazoles, triazolino[4,3-a] pyrimidines , andpyrazolo [3,4-d]pyridazines were synthesized in good yields from reactions of hydrazonoyl halides with alkyl carbodithioates, pyrimidine-2-thione, and substituted prop-2-ene-1-one, respect

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