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1257533-48-4

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1257533-48-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257533-48-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,5,3 and 3 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1257533-48:
(9*1)+(8*2)+(7*5)+(6*7)+(5*5)+(4*3)+(3*3)+(2*4)+(1*8)=164
164 % 10 = 4
So 1257533-48-4 is a valid CAS Registry Number.

1257533-48-4Downstream Products

1257533-48-4Relevant articles and documents

Selective synthesis of pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl) formamide, or N-(1H-pyrazol-5-yl)formamidine derivatives from N-1-substituted-5-aminopyrazoles with new Vilsmeier-type reagents

Chang, Chun-Hsi,Tsai, Henry J.,Huang, Yu-Ying,Lin, Hui-Yi,Wang, Li-Ya,Wu, Tian-Shung,Wong, Fung Fuh

supporting information, p. 1378 - 1386 (2013/02/23)

Various halomethyleniminium salts as novel Vilsmeier agents were synthesized from formamide or N-methylformamide with POCl3. Treatment of N-1-substituted-aminopyrazoles including N-1-phenyl-5-aminopyrazoles, N-1-(2-pyridinyl)-5-aminopyrazoles,

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