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(9R,9aR)-9-(tert-Butyl-diphenyl-silanyloxymethyl)-7-methyl-4,6,6a,7,9,9a-hexahydro-8-oxa-4,7-diaza-cyclopenta[e]acenaphthylene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74447-20-4

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74447-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74447-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,4 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74447-20:
(7*7)+(6*4)+(5*4)+(4*4)+(3*7)+(2*2)+(1*0)=134
134 % 10 = 4
So 74447-20-4 is a valid CAS Registry Number.

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