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8-Amino-1-hydroxymethyl-5,7-dimethyl-4-oxo-3,4-dihydro-phthalazine-6-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

134903-90-5

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134903-90-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134903-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,0 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 134903-90:
(8*1)+(7*3)+(6*4)+(5*9)+(4*0)+(3*3)+(2*9)+(1*0)=125
125 % 10 = 5
So 134903-90-5 is a valid CAS Registry Number.

134903-90-5Upstream product

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