1H-Indole-1-carboxylic acid, 4-chloro-2,3-dihydro-2-hydroxy-,
1,1-dimethylethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138343-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 138343-81: (8*1)+(7*3)+(6*8)+(5*3)+(4*4)+(3*3)+(2*8)+(1*1)=134 134 % 10 = 4 So 138343-81-4 is a valid CAS Registry Number.