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3,7-anhydro-1,2,6-trideoxy-6-C-<propyl>silyl>ethynyl>-4-O-(triisopropylsilyl)-1-C-(trimethylsilyl)-D-glycero-D-gulo-oct-1-ynitol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

221189-25-9

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221189-25-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221189-25-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,8 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221189-25:
(8*2)+(7*2)+(6*1)+(5*1)+(4*8)+(3*9)+(2*2)+(1*5)=109
109 % 10 = 9
So 221189-25-9 is a valid CAS Registry Number.

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