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1237748-27-4

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1237748-27-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1237748-27-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,7,7,4 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1237748-27:
(9*1)+(8*2)+(7*3)+(6*7)+(5*7)+(4*4)+(3*8)+(2*2)+(1*7)=174
174 % 10 = 4
So 1237748-27-4 is a valid CAS Registry Number.

1237748-27-4Downstream Products

1237748-27-4Relevant articles and documents

Regiospecific synthesis of 6-aryl-3-cyano-5-alkylamino/arylamino-1-p-tolyl- 1H-pyrazolo[4,3-d]pyrimidin-7(6H)-ones via iminophosphorane-mediated annulation

Wu, Ming-Hu,Hu, Ji-Huan,Sheil, Dong-Sheng,Brémond, Paul,Guo, Haibing

scheme or table, p. 5112 - 5120 (2010/08/20)

An efficient and straightforward approach to the synthesis of 6-aryl-3-cyano-5-alkylamino-1-p-tolyl-IH- pyrazolo[4,3-d]pyrimidin-7(6H)-ones 8 has been developed from the readily commercially available starting materials 4-methylaniline and malononitrile i

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