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28750-77-8

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28750-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28750-77-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,5 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28750-77:
(7*2)+(6*8)+(5*7)+(4*5)+(3*0)+(2*7)+(1*7)=138
138 % 10 = 8
So 28750-77-8 is a valid CAS Registry Number.

28750-77-8Relevant articles and documents

A General Synthesis of 3,5-Dihalo-2H-1,4-oxazin-2-ones from Cyanohydrins

Meerpoel, Lieven,Hoornaert, Georges

, p. 905 - 908 (2007/10/02)

In a novel approach starting from O-trimethylsilyl protected or unprotected cyanohydrins and oxalyl chloride or bromide, a series of unknown 6-substituted 3,5-dihalo-2H-1,4-oxazin-2-ones were prepared.The method was shown to be efficient for various types of cyanohydrins; however cyclization was not obtained with cyanohydrins containing bulky substituents, electron-rich aryl or heteroaryl groups.A mechanism is proposed.

Studies on antidiabetic agents. III. 5-arylthiazolidine-2,4-diones as potent aldose reductase inhibitors

Sohda,Mizuno,Imamiya,Tawada,Meguro,Kawamatsu,Yamamoto

, p. 3601 - 3616 (2007/10/02)

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