2-Butanol,
3-[bis(phenylmethyl)amino]-1-chloro-4-[[(1,1-dimethylethyl)dimethylsilyl]
oxy]-, (2R,3S)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 388632-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,8,6,3 and 2 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 388632-21: (8*3)+(7*8)+(6*8)+(5*6)+(4*3)+(3*2)+(2*2)+(1*1)=181 181 % 10 = 1 So 388632-21-1 is a valid CAS Registry Number.