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(1S,4R,7S,8S)-7,8-O-isopropylidenedioxy-3-t-butoxycarbonyl-3-aza-2-oxabicyclo[2.2.2]oct-5-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

503817-69-4

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503817-69-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503817-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,8,1 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 503817-69:
(8*5)+(7*0)+(6*3)+(5*8)+(4*1)+(3*7)+(2*6)+(1*9)=144
144 % 10 = 4
So 503817-69-4 is a valid CAS Registry Number.

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