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151921-25-4

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151921-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 151921-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,9,2 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 151921-25:
(8*1)+(7*5)+(6*1)+(5*9)+(4*2)+(3*1)+(2*2)+(1*5)=114
114 % 10 = 4
So 151921-25-4 is a valid CAS Registry Number.

151921-25-4Downstream Products

151921-25-4Relevant articles and documents

Antipyrine congeners as antidepressant agents

Tripathi,Verma,Palit,Shanker

, p. 1045 - 1049 (2007/10/02)

1-(N-Antipyrinylglycyl)-3-arylideneamino)-2-thiobarbituric acids (III) were synthesized from 1-arylidene-4-(N-antipyrinyl glycyl)-3-thiosemicarbazones (II). Compounds II in turn were prepared from 4-amino antipyrine. Compounds III were finally converted into 1-(N-antipyrinylglycyl)-3-[(3'-chloro-4-aryl) azitidinyl]-2-thiobarbituric acids (IV). 4-Aminoantipyrine was also treated with different N-protected amino acids in the presence of N,N'-dicyclohexylcarbodiimide to yield N-(antipyrinylcarbamoyl) substituted alkyl benzamides (V); their debenzoylation yielded 2-(amino-N-antipyrinyl) substituted acetamides (VI). The compounds were screened for their antidepressant activity. Compounds IIId, Va and Vb exhibited activity better than imipramine with less toxicity (ALD50 > 1000 mg/kg).

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