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1331783-45-9

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1331783-45-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1331783-45-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,1,7,8 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1331783-45:
(9*1)+(8*3)+(7*3)+(6*1)+(5*7)+(4*8)+(3*3)+(2*4)+(1*5)=149
149 % 10 = 9
So 1331783-45-9 is a valid CAS Registry Number.

1331783-45-9Downstream Products

1331783-45-9Relevant articles and documents

Recyclable NaHSO4 catalyzed alkylation of tert-enamides with indoles or amines in water: Facile construction of pharmaceutically analogous bis-alkaloid scaffolds

Chu, Xue-Qiang,Wang, Shun-Yi,Ji, Shun-Jun

, p. 8380 - 8387 (2013/09/02)

An efficient sodium hydrogen sulfate catalyzed alkylation of indoles or amines with tertiary enamides has been accomplished in water, affording the pharmacologically and biologically active 2-oxo-1-pyrrolidine derivatives in moderate to excellent yields. The key to our success is the use of NaHSO 4 as a low loading, inexpensive, green and recyclable catalyst and the reactions could be scaled up to gram level.

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