4-NITRO-DL-PHENYLALANINE HYDRATE is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 207569-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,5,6 and 9 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 207569-25: (8*2)+(7*0)+(6*7)+(5*5)+(4*6)+(3*9)+(2*2)+(1*5)=143 143 % 10 = 3 So 207569-25-3 is a valid CAS Registry Number.