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21560-74-7

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21560-74-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21560-74-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,6 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21560-74:
(7*2)+(6*1)+(5*5)+(4*6)+(3*0)+(2*7)+(1*4)=87
87 % 10 = 7
So 21560-74-7 is a valid CAS Registry Number.

21560-74-7Relevant articles and documents

Guanidinum chloride as dehydrocyclization agent in the synthesis of 2-fuctionalized (4H)-3,1-benzoxazine-4-ones

Nikpour, Farzad,Bahmani, Asrin,Havasi, Forugh,Sharafi-Kolkeshvandi, Mahnaz

, p. 34 - 37 (2014/02/14)

A facile and expedient route for the synthesis of 2-ethoxy- and 2-(ethylcarboxylate)-(4H)-3,1-benzoxazine-4-ones is described using guanidinium chloride as a safe and convenient dehydrocyclization agent. High yields of the products obtain under mild react

Synthesis and biological evaluation of benzamides and benzamidines: Structural requirement of a pyrimidine ring for inhibition of EGFR tyrosine kinase

Asano, Toru,Yoshikawa, Tomohiro,Nakamura, Hiroyuki,Uehara, Yoshimasa,Yamamoto, Yoshinori

, p. 2299 - 2302 (2007/10/03)

The benzamides 1 and the benzamidines 2-3 were synthesized as the mimics of 4-anilinoquinazolines, which possess inhibition of epidermal growth factor receptor (EGFR) tyrosine kinase, and tested for cytotoxicity toward A431 and inhibitory activity toward

Single-step preparation of 2-alkoxy(phenoxy)-4H-3,1-benzoxazine-4-ones inhibiting chymotrypsin

Leistner,Simon,Wagner,Sturzebecher

, p. 694 - 695 (2007/10/02)

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