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1021949-56-3

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1021949-56-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1021949-56-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,9,4 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1021949-56:
(9*1)+(8*0)+(7*2)+(6*1)+(5*9)+(4*4)+(3*9)+(2*5)+(1*6)=133
133 % 10 = 3
So 1021949-56-3 is a valid CAS Registry Number.

1021949-56-3Downstream Products

1021949-56-3Relevant articles and documents

Simultaneous synthesis of pyrazolopyridines and pyrazolopyrimidinones under microwave irradiation

Zhang, Li-Jun,Shi, Da-Xin,Li, Jia-Rong

experimental part, p. 4010 - 4018 (2009/12/24)

The direct reaction of o-aminopyrazocarbonitriles and carbonyl compounds to afford pyrazolopyrimidinones was discovered; hence, a simultaneous synthetic method for pyrazolopyridines and pyrazolopyrimidinones was achieved. Under microwave irradiation, bett

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