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21320-98-9

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21320-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21320-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,2 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21320-98:
(7*2)+(6*1)+(5*3)+(4*2)+(3*0)+(2*9)+(1*8)=69
69 % 10 = 9
So 21320-98-9 is a valid CAS Registry Number.

21320-98-9Downstream Products

21320-98-9Relevant articles and documents

SYNTHESIS OF 1-SUBSTITUTED DIHYDROPYRIMIDINONE AND QUINAZOLINONE DERIVATIVES

Mitskyavichyus, V. Yu.,Baltrushis, R. S.

, p. 1185 - 1188 (2007/10/02)

Condensation of N-substituted β-alanines (synthesized from anthranilic acid or its esters and acrylic acid) with urea afforded the corresponding 1-substituted dihydropyrimidinedione and quinazolinedione.When potassium thiocyanate was employed in the reaction instead of urea, decarboxylation and desulfuration occurred.

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