Molecular structure of (1R,3S)-Boc-3-aminocyclopentane-1-carboxylic acid (CAS NO.161660-94-2) is:

Product Name: (1R,3S)-Boc-3-aminocyclopentane-1-carboxylic acid
CAS Registry Number: 161660-94-2
Systematic Name: (1R,3S)-3-[(tert-butoxycarbonyl)amino]cyclopentanecarboxylic acid
Molecular Formula: C₁₁H₁₉NO₄
Molecular Weight: 229.27
Melting Point: 96.1 °C
Index of Refraction: 1.495 
Molar Refractivity: 58.05 cm³ 
Molar Volume: 199 cm³
Surface Tension: 42.8 dyne/cm 
Density: 1.15 g/cm³ 
Flash Point: 185.1 °C 
Enthalpy of Vaporization: 69.27 kJ/mol 
Boiling Point: 382.5 °C at 760 mmHg 
Vapour Pressure: 6.55E-07 mmHg at 25 °C 
Product Categories: Unusual amino acids;API intermediates
SMILES: O=C(OC(C)(C)C)N[C@@H]1C[C@H](C(=O)O)CC1
InChI: InChI=1/C11H19NO4/c1-11(2,3)16-10(15)12-8-5-4-7(6-8)9(13)14/h7-8H,4-6H2,1-3H3,(H,12,15)(H,13,14)/t7-,8+/m1/s1
InChIKey: RNJQBGXOSAQQDG-SFYZADRCBC
Std. InChI: InChI=1S/C11H19NO4/c1-11(2,3)16-10(15)12-8-5-4-7(6-8)9(13)14/h7-8H,4-6H2,1-3H3,(H,12,15)(H,13,14)/t7-,8+/m1/s1
Std. InChIKey: RNJQBGXOSAQQDG-SFYZADRCSA-N

Safty information about (1R,3S)-Boc-3-aminocyclopentane-1-carboxylic acid (CAS NO.161660-94-2) is:
Hazard Codes: Xi
Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3
HazardClass: IRRITANT

 (1R,3S)-Boc-3-aminocyclopentane-1-carboxylic acid , its cas register number is 161660-94-2. It also can be called (+)-(1S,3R)-N-boc-3-aminocyclopentanecarboxylic acid .It is a white powder.