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(6R)-3-methyl-7c-methylsulfanyl-7t-(4-nitro-benzylideneamino)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2,2-trichloro-ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40288-89-9

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40288-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40288-89-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,8 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40288-89:
(7*4)+(6*0)+(5*2)+(4*8)+(3*8)+(2*8)+(1*9)=119
119 % 10 = 9
So 40288-89-9 is a valid CAS Registry Number.
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