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77597-25-2

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77597-25-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77597-25-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,9 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77597-25:
(7*7)+(6*7)+(5*5)+(4*9)+(3*7)+(2*2)+(1*5)=182
182 % 10 = 2
So 77597-25-2 is a valid CAS Registry Number.

77597-25-2Relevant articles and documents

2-(ALKYLTHIO)PENEM-3-CARBOXYLIC ACIDS. II. CHEMICAL MANIPULATION OF PENEM SIDE CHAINS

Oida, Sadao,Yoshida, Akira,Hayashi, Teruo,Takeda, Noriko,Ohki, Eiji

, p. 3258 - 3264 (2007/10/02)

The tert-butyldimethylsilyl group was found to be effective for protection of the hydroxyl group in penem synthesis.Manipulation of the side-chain hydroxyl group of base-sensitive penem-3-carboxylates was successfully conducted by means of a displacement

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