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(6R,7R)-3-<<<3,4-bis(acetyloxy)benzoyl>oxy>methyl>-7-<<(1,1-dimethylethoxy)carbonyl>amino>-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxylic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139290-97-4

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139290-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139290-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,9 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139290-97:
(8*1)+(7*3)+(6*9)+(5*2)+(4*9)+(3*0)+(2*9)+(1*7)=154
154 % 10 = 4
So 139290-97-4 is a valid CAS Registry Number.

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