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1373886-20-4

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1373886-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1373886-20-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,3,8,8 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1373886-20:
(9*1)+(8*3)+(7*7)+(6*3)+(5*8)+(4*8)+(3*6)+(2*2)+(1*0)=194
194 % 10 = 4
So 1373886-20-4 is a valid CAS Registry Number.

1373886-20-4Downstream Products

1373886-20-4Relevant articles and documents

Chitosan: An efficient biodegradable and recyclable green catalyst for one-pot synthesis of 3,4-dihydropyrimidinones of curcumin in aqueous media

Lal, Jaggi,Gupta, Sushil K.,Agarwal, Dau D.

, p. 38 - 43 (2012/10/30)

An efficient procedure for the synthesis of curcumin 3,4- dihydropyrimidinones has been developed by simple one-pot condensation of curcumin, aromatic aldehydes and urea/thiourea in the presence of commercially available chitosan in 2% acetic acid in aqueous media at 60°C for 80-90 min. In the reaction, curcumin: a potential biologically active molecule has been used as a component of multi-component synthesis using chitosan as an efficient biodegradable and recyclable green catalyst. The resultant product curcumin 3,4-dihydropyrimidinone is formed in excellent yield (97%). The chitosan catalyst can be reused for without loss of catalytic activity.

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