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191789-56-7

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191789-56-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191789-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,7,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 191789-56:
(8*1)+(7*9)+(6*1)+(5*7)+(4*8)+(3*9)+(2*5)+(1*6)=187
187 % 10 = 7
So 191789-56-7 is a valid CAS Registry Number.

191789-56-7Relevant articles and documents

Facile synthesis of 1,2,4,5-tetrahydro-1,4-benzodiazepin-3-ones: Via cyclization of N -alkoxy α-halogenoacetamides with N -(2-chloromethyl)aryl amides

Jin, Qiaomei,Zhang, Dongjian,Zhang, Jian

, p. 9708 - 9711 (2019)

A facile and efficient cyclization of N-alkoxy α-halogenoacetamides with N-(2-chloromethyl)aryl amides has been achieved for rapid access to 1,2,4,5-tetrahydro-1,4-benzodiazepine-3-one derivatives (up to 95% yield). The intriguing features of this intermolecular cyclization include its mild reaction conditions and easy handling for scalable synthesis.

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