(2R,3S,5R)-5-(2,4-Diamino-5-prop-1-ynyl-pyrrolo[2,3-d]pyrimidin-7-yl)-2-hydroxymethyl-tetrahydro-furan-3-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 199938-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,9,3 and 8 respectively; the second part has 2 digits, 8 and 3 respectively. Calculate Digit Verification of CAS Registry Number 199938-83: (8*1)+(7*9)+(6*9)+(5*9)+(4*3)+(3*8)+(2*8)+(1*3)=225 225 % 10 = 5 So 199938-83-5 is a valid CAS Registry Number.