3-(phthalimido)-1,2,3,4-tetrahydrocarbazole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 1234493-21-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,4,9 and 3 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 1234493-21: (9*1)+(8*2)+(7*3)+(6*4)+(5*4)+(4*9)+(3*3)+(2*2)+(1*1)=140 140 % 10 = 0 So 1234493-21-0 is a valid CAS Registry Number.